diff --git a/api/dns-lookup.php b/api/dns-lookup.php
new file mode 100644
index 0000000..ad7cf59
--- /dev/null
+++ b/api/dns-lookup.php
@@ -0,0 +1,161 @@
+<?php
+/**
+ * HexaDNS - DNS Lookup API
+ * 
+ * Führt echte DNS-Abfragen durch und gibt die Ergebnisse als JSON zurück.
+ * 
+ * Verwendung: GET /api/dns-lookup.php?domain=example.com
+ */
+
+// CORS Headers für Frontend-Zugriff
+header('Content-Type: application/json; charset=utf-8');
+header('Access-Control-Allow-Origin: *');
+header('Access-Control-Allow-Methods: GET, OPTIONS');
+header('Access-Control-Allow-Headers: Content-Type');
+
+// Preflight request handling
+if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
+    http_response_code(200);
+    exit;
+}
+
+// Nur GET-Anfragen erlauben
+if ($_SERVER['REQUEST_METHOD'] !== 'GET') {
+    http_response_code(405);
+    echo json_encode(['error' => 'Nur GET-Anfragen erlaubt']);
+    exit;
+}
+
+// Domain-Parameter prüfen
+$domain = isset($_GET['domain']) ? trim($_GET['domain']) : '';
+
+if (empty($domain)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Domain-Parameter fehlt']);
+    exit;
+}
+
+// Domain validieren (einfache Prüfung)
+if (!preg_match('/^[a-zA-Z0-9][a-zA-Z0-9\-\.]*\.[a-zA-Z]{2,}$/', $domain)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Ungültiges Domain-Format']);
+    exit;
+}
+
+// DNS-Abfrage durchführen
+$startTime = microtime(true);
+$result = performDnsLookup($domain);
+$queryTime = round((microtime(true) - $startTime) * 1000, 2);
+
+// Ergebnis zurückgeben
+echo json_encode([
+    'success' => true,
+    'domain' => $domain,
+    'query_time_ms' => $queryTime,
+    'timestamp' => date('Y-m-d H:i:s'),
+    'records' => $result
+], JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
+
+/**
+ * Führt DNS-Lookup für verschiedene Record-Typen durch
+ */
+function performDnsLookup(string $domain): array {
+    $records = [
+        'A' => [],
+        'AAAA' => [],
+        'MX' => [],
+        'NS' => [],
+        'TXT' => [],
+        'CNAME' => [],
+        'SOA' => []
+    ];
+    
+    // A-Records (IPv4)
+    $aRecords = @dns_get_record($domain, DNS_A);
+    if ($aRecords) {
+        foreach ($aRecords as $record) {
+            $records['A'][] = [
+                'ip' => $record['ip'],
+                'ttl' => $record['ttl']
+            ];
+        }
+    }
+    
+    // AAAA-Records (IPv6)
+    $aaaaRecords = @dns_get_record($domain, DNS_AAAA);
+    if ($aaaaRecords) {
+        foreach ($aaaaRecords as $record) {
+            $records['AAAA'][] = [
+                'ipv6' => $record['ipv6'],
+                'ttl' => $record['ttl']
+            ];
+        }
+    }
+    
+    // MX-Records (Mail)
+    $mxRecords = @dns_get_record($domain, DNS_MX);
+    if ($mxRecords) {
+        foreach ($mxRecords as $record) {
+            $records['MX'][] = [
+                'target' => $record['target'],
+                'priority' => $record['pri'],
+                'ttl' => $record['ttl']
+            ];
+        }
+        // Nach Priorität sortieren
+        usort($records['MX'], fn($a, $b) => $a['priority'] <=> $b['priority']);
+    }
+    
+    // NS-Records (Nameserver)
+    $nsRecords = @dns_get_record($domain, DNS_NS);
+    if ($nsRecords) {
+        foreach ($nsRecords as $record) {
+            $records['NS'][] = [
+                'target' => $record['target'],
+                'ttl' => $record['ttl']
+            ];
+        }
+    }
+    
+    // TXT-Records
+    $txtRecords = @dns_get_record($domain, DNS_TXT);
+    if ($txtRecords) {
+        foreach ($txtRecords as $record) {
+            $records['TXT'][] = [
+                'txt' => $record['txt'],
+                'ttl' => $record['ttl']
+            ];
+        }
+    }
+    
+    // CNAME-Records
+    $cnameRecords = @dns_get_record($domain, DNS_CNAME);
+    if ($cnameRecords) {
+        foreach ($cnameRecords as $record) {
+            $records['CNAME'][] = [
+                'target' => $record['target'],
+                'ttl' => $record['ttl']
+            ];
+        }
+    }
+    
+    // SOA-Record (Start of Authority)
+    $soaRecords = @dns_get_record($domain, DNS_SOA);
+    if ($soaRecords) {
+        foreach ($soaRecords as $record) {
+            $records['SOA'][] = [
+                'mname' => $record['mname'] ?? '',
+                'rname' => $record['rname'] ?? '',
+                'serial' => $record['serial'] ?? 0,
+                'refresh' => $record['refresh'] ?? 0,
+                'retry' => $record['retry'] ?? 0,
+                'expire' => $record['expire'] ?? 0,
+                'minimum_ttl' => $record['minimum-ttl'] ?? 0,
+                'ttl' => $record['ttl']
+            ];
+        }
+    }
+    
+    // Leere Arrays entfernen
+    return array_filter($records, fn($arr) => !empty($arr));
+}
diff --git a/api/dns-propagation.php b/api/dns-propagation.php
new file mode 100644
index 0000000..62f2949
--- /dev/null
+++ b/api/dns-propagation.php
@@ -0,0 +1,175 @@
+<?php
+/**
+ * HexaDNS - DNS Propagation Check API
+ * 
+ * Prüft DNS-Records bei verschiedenen öffentlichen DNS-Servern
+ * 
+ * Verwendung: GET /api/dns-propagation.php?domain=example.com&type=A
+ */
+
+header('Content-Type: application/json; charset=utf-8');
+header('Access-Control-Allow-Origin: *');
+header('Access-Control-Allow-Methods: GET, OPTIONS');
+header('Access-Control-Allow-Headers: Content-Type');
+
+if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
+    http_response_code(200);
+    exit;
+}
+
+// Öffentliche DNS-Server für Propagation-Check
+$dnsServers = [
+    ['name' => 'Google', 'ip' => '8.8.8.8', 'location' => 'Global'],
+    ['name' => 'Google Secondary', 'ip' => '8.8.4.4', 'location' => 'Global'],
+    ['name' => 'Cloudflare', 'ip' => '1.1.1.1', 'location' => 'Global'],
+    ['name' => 'Cloudflare Secondary', 'ip' => '1.0.0.1', 'location' => 'Global'],
+    ['name' => 'Quad9', 'ip' => '9.9.9.9', 'location' => 'Global'],
+    ['name' => 'OpenDNS', 'ip' => '208.67.222.222', 'location' => 'USA'],
+    ['name' => 'Comodo', 'ip' => '8.26.56.26', 'location' => 'USA'],
+    ['name' => 'Level3', 'ip' => '4.2.2.1', 'location' => 'USA'],
+];
+
+$domain = isset($_GET['domain']) ? trim($_GET['domain']) : '';
+$type = isset($_GET['type']) ? strtoupper(trim($_GET['type'])) : 'A';
+
+if (empty($domain)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Domain-Parameter fehlt']);
+    exit;
+}
+
+if (!preg_match('/^[a-zA-Z0-9][a-zA-Z0-9\-\.]*\.[a-zA-Z]{2,}$/', $domain)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Ungültiges Domain-Format']);
+    exit;
+}
+
+// Erlaubte Record-Typen
+$allowedTypes = ['A', 'AAAA', 'MX', 'NS', 'TXT', 'CNAME'];
+if (!in_array($type, $allowedTypes)) {
+    $type = 'A';
+}
+
+$results = [];
+$startTime = microtime(true);
+
+foreach ($dnsServers as $server) {
+    $serverResult = [
+        'server' => $server['name'],
+        'ip' => $server['ip'],
+        'location' => $server['location'],
+        'records' => [],
+        'status' => 'success',
+        'response_time' => 0
+    ];
+    
+    $queryStart = microtime(true);
+    
+    // DNS-Abfrage mit spezifischem Server via dig (falls verfügbar) oder dns_get_record
+    $records = queryDnsServer($domain, $type, $server['ip']);
+    
+    $serverResult['response_time'] = round((microtime(true) - $queryStart) * 1000, 2);
+    $serverResult['records'] = $records;
+    
+    if (empty($records)) {
+        $serverResult['status'] = 'no_records';
+    }
+    
+    $results[] = $serverResult;
+}
+
+$totalTime = round((microtime(true) - $startTime) * 1000, 2);
+
+// Propagation-Status berechnen
+$propagationStatus = calculatePropagationStatus($results);
+
+echo json_encode([
+    'success' => true,
+    'domain' => $domain,
+    'record_type' => $type,
+    'propagation_status' => $propagationStatus,
+    'total_time_ms' => $totalTime,
+    'timestamp' => date('Y-m-d H:i:s'),
+    'servers' => $results
+], JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
+
+/**
+ * DNS-Abfrage bei spezifischem Server
+ */
+function queryDnsServer(string $domain, string $type, string $server): array {
+    $records = [];
+    
+    // Versuche zuerst dig zu verwenden (genauer)
+    $digResult = @shell_exec("dig @{$server} {$domain} {$type} +short +time=2 +tries=1 2>/dev/null");
+    
+    if ($digResult !== null && trim($digResult) !== '') {
+        $lines = array_filter(explode("\n", trim($digResult)));
+        foreach ($lines as $line) {
+            $records[] = trim($line);
+        }
+        return $records;
+    }
+    
+    // Fallback auf PHP dns_get_record (verwendet System-DNS)
+    $dnsType = constant('DNS_' . $type);
+    $result = @dns_get_record($domain, $dnsType);
+    
+    if ($result) {
+        foreach ($result as $record) {
+            switch ($type) {
+                case 'A':
+                    $records[] = $record['ip'] ?? '';
+                    break;
+                case 'AAAA':
+                    $records[] = $record['ipv6'] ?? '';
+                    break;
+                case 'MX':
+                    $records[] = ($record['pri'] ?? '') . ' ' . ($record['target'] ?? '');
+                    break;
+                case 'NS':
+                case 'CNAME':
+                    $records[] = $record['target'] ?? '';
+                    break;
+                case 'TXT':
+                    $records[] = $record['txt'] ?? '';
+                    break;
+            }
+        }
+    }
+    
+    return array_filter($records);
+}
+
+/**
+ * Berechnet den Propagation-Status
+ */
+function calculatePropagationStatus(array $results): array {
+    $totalServers = count($results);
+    $serversWithRecords = 0;
+    $allRecords = [];
+    
+    foreach ($results as $result) {
+        if (!empty($result['records'])) {
+            $serversWithRecords++;
+            foreach ($result['records'] as $record) {
+                $allRecords[] = $record;
+            }
+        }
+    }
+    
+    // Einzigartige Records
+    $uniqueRecords = array_unique($allRecords);
+    
+    // Konsistenz prüfen (haben alle Server die gleichen Records?)
+    $isConsistent = count($uniqueRecords) <= 1 || $serversWithRecords === 0;
+    
+    $percentage = $totalServers > 0 ? round(($serversWithRecords / $totalServers) * 100) : 0;
+    
+    return [
+        'percentage' => $percentage,
+        'servers_responding' => $serversWithRecords,
+        'total_servers' => $totalServers,
+        'is_consistent' => $isConsistent,
+        'unique_values' => array_values($uniqueRecords)
+    ];
+}
diff --git a/api/ping-check.php b/api/ping-check.php
new file mode 100644
index 0000000..0ee176a
--- /dev/null
+++ b/api/ping-check.php
@@ -0,0 +1,179 @@
+<?php
+/**
+ * HexaDNS - Ping/Verfügbarkeitstest API
+ * 
+ * Prüft die Erreichbarkeit einer Domain
+ * 
+ * Verwendung: GET /api/ping-check.php?domain=example.com
+ */
+
+header('Content-Type: application/json; charset=utf-8');
+header('Access-Control-Allow-Origin: *');
+header('Access-Control-Allow-Methods: GET, OPTIONS');
+header('Access-Control-Allow-Headers: Content-Type');
+
+if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
+    http_response_code(200);
+    exit;
+}
+
+$domain = isset($_GET['domain']) ? trim($_GET['domain']) : '';
+
+if (empty($domain)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Domain-Parameter fehlt']);
+    exit;
+}
+
+// Protokoll und Pfad entfernen
+$domain = preg_replace('/^(https?:\/\/)?/', '', $domain);
+$domain = explode('/', $domain)[0];
+
+if (!preg_match('/^[a-zA-Z0-9][a-zA-Z0-9\-\.]*\.[a-zA-Z]{2,}$/', $domain)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Ungültiges Domain-Format']);
+    exit;
+}
+
+$startTime = microtime(true);
+$results = performConnectivityCheck($domain);
+$totalTime = round((microtime(true) - $startTime) * 1000, 2);
+
+echo json_encode([
+    'success' => true,
+    'domain' => $domain,
+    'total_time_ms' => $totalTime,
+    'timestamp' => date('Y-m-d H:i:s'),
+    'results' => $results
+], JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
+
+/**
+ * Führt verschiedene Erreichbarkeitstests durch
+ */
+function performConnectivityCheck(string $domain): array {
+    $results = [
+        'dns_resolution' => checkDnsResolution($domain),
+        'icmp_ping' => checkIcmpPing($domain),
+        'http' => checkHttpConnection($domain, false),
+        'https' => checkHttpConnection($domain, true),
+        'overall_status' => 'offline'
+    ];
+    
+    // Overall-Status bestimmen
+    if ($results['https']['reachable'] || $results['http']['reachable']) {
+        $results['overall_status'] = 'online';
+    } elseif ($results['icmp_ping']['reachable']) {
+        $results['overall_status'] = 'partial';
+    } elseif ($results['dns_resolution']['resolved']) {
+        $results['overall_status'] = 'dns_only';
+    }
+    
+    return $results;
+}
+
+/**
+ * DNS-Auflösung prüfen
+ */
+function checkDnsResolution(string $domain): array {
+    $start = microtime(true);
+    $ip = gethostbyname($domain);
+    $time = round((microtime(true) - $start) * 1000, 2);
+    
+    $resolved = $ip !== $domain;
+    
+    return [
+        'resolved' => $resolved,
+        'ip' => $resolved ? $ip : null,
+        'response_time_ms' => $time
+    ];
+}
+
+/**
+ * ICMP Ping (falls verfügbar)
+ */
+function checkIcmpPing(string $domain): array {
+    $result = [
+        'reachable' => false,
+        'response_time_ms' => null,
+        'packet_loss' => null
+    ];
+    
+    // Versuche ping-Kommando
+    $pingResult = @shell_exec("ping -c 3 -W 2 {$domain} 2>/dev/null");
+    
+    if ($pingResult) {
+        // Prüfe auf erfolgreiche Antworten
+        if (preg_match('/(\d+)% packet loss/', $pingResult, $lossMatch)) {
+            $result['packet_loss'] = (int)$lossMatch[1];
+            $result['reachable'] = $result['packet_loss'] < 100;
+        }
+        
+        // Durchschnittliche Zeit extrahieren
+        if (preg_match('/avg.*?=.*?[\d.]+\/([\d.]+)\//', $pingResult, $timeMatch)) {
+            $result['response_time_ms'] = (float)$timeMatch[1];
+        } elseif (preg_match('/time[=<]([\d.]+)\s*ms/', $pingResult, $timeMatch)) {
+            $result['response_time_ms'] = (float)$timeMatch[1];
+        }
+    }
+    
+    return $result;
+}
+
+/**
+ * HTTP(S)-Verbindung prüfen
+ */
+function checkHttpConnection(string $domain, bool $https = false): array {
+    $protocol = $https ? 'https' : 'http';
+    $port = $https ? 443 : 80;
+    $url = "{$protocol}://{$domain}";
+    
+    $result = [
+        'reachable' => false,
+        'status_code' => null,
+        'response_time_ms' => null,
+        'redirect_url' => null,
+        'server' => null
+    ];
+    
+    $start = microtime(true);
+    
+    // cURL verwenden
+    $ch = curl_init();
+    curl_setopt_array($ch, [
+        CURLOPT_URL => $url,
+        CURLOPT_RETURNTRANSFER => true,
+        CURLOPT_HEADER => true,
+        CURLOPT_NOBODY => true,
+        CURLOPT_TIMEOUT => 10,
+        CURLOPT_CONNECTTIMEOUT => 5,
+        CURLOPT_FOLLOWLOCATION => false,
+        CURLOPT_SSL_VERIFYPEER => false,
+        CURLOPT_SSL_VERIFYHOST => 0,
+        CURLOPT_USERAGENT => 'HexaDNS Ping Check/1.0'
+    ]);
+    
+    $response = curl_exec($ch);
+    $result['response_time_ms'] = round((microtime(true) - $start) * 1000, 2);
+    
+    if ($response !== false) {
+        $result['status_code'] = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+        $result['reachable'] = $result['status_code'] > 0;
+        
+        // Redirect-URL
+        $redirectUrl = curl_getinfo($ch, CURLINFO_REDIRECT_URL);
+        if (!empty($redirectUrl)) {
+            $result['redirect_url'] = $redirectUrl;
+        }
+        
+        // Server-Header
+        if (preg_match('/Server:\s*([^\r\n]+)/i', $response, $serverMatch)) {
+            $result['server'] = trim($serverMatch[1]);
+        }
+    } else {
+        $result['error'] = curl_error($ch);
+    }
+    
+    curl_close($ch);
+    
+    return $result;
+}
diff --git a/api/reverse-dns.php b/api/reverse-dns.php
new file mode 100644
index 0000000..4aa832d
--- /dev/null
+++ b/api/reverse-dns.php
@@ -0,0 +1,209 @@
+<?php
+/**
+ * HexaDNS - Reverse DNS Lookup API
+ * 
+ * Löst eine IP-Adresse zu einem Hostnamen auf
+ * 
+ * Verwendung: GET /api/reverse-dns.php?ip=8.8.8.8
+ */
+
+header('Content-Type: application/json; charset=utf-8');
+header('Access-Control-Allow-Origin: *');
+header('Access-Control-Allow-Methods: GET, OPTIONS');
+header('Access-Control-Allow-Headers: Content-Type');
+
+if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
+    http_response_code(200);
+    exit;
+}
+
+$ip = isset($_GET['ip']) ? trim($_GET['ip']) : '';
+
+if (empty($ip)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'IP-Parameter fehlt']);
+    exit;
+}
+
+// IPv4 oder IPv6 validieren
+$isIPv4 = filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
+$isIPv6 = filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6);
+
+if (!$isIPv4 && !$isIPv6) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Ungültiges IP-Format']);
+    exit;
+}
+
+$startTime = microtime(true);
+$result = performReverseLookup($ip, $isIPv6 ? 'IPv6' : 'IPv4');
+$queryTime = round((microtime(true) - $startTime) * 1000, 2);
+
+echo json_encode([
+    'success' => true,
+    'ip' => $ip,
+    'ip_version' => $isIPv6 ? 'IPv6' : 'IPv4',
+    'query_time_ms' => $queryTime,
+    'timestamp' => date('Y-m-d H:i:s'),
+    'result' => $result
+], JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
+
+/**
+ * Führt Reverse DNS Lookup durch
+ */
+function performReverseLookup(string $ip, string $version): array {
+    $result = [
+        'hostname' => null,
+        'ptr_record' => null,
+        'additional_info' => []
+    ];
+    
+    // PHP gethostbyaddr
+    $hostname = @gethostbyaddr($ip);
+    
+    if ($hostname && $hostname !== $ip) {
+        $result['hostname'] = $hostname;
+        
+        // Verifizieren durch Forward-Lookup
+        $forwardIp = gethostbyname($hostname);
+        $result['forward_verified'] = ($forwardIp === $ip);
+        
+        // Zusätzliche Infos über den Host sammeln
+        $result['additional_info'] = getHostInfo($hostname);
+    } else {
+        $result['error'] = 'Kein PTR-Record gefunden';
+    }
+    
+    // PTR-Record direkt abfragen
+    $ptrRecord = getPtrRecord($ip, $version);
+    if ($ptrRecord) {
+        $result['ptr_record'] = $ptrRecord;
+    }
+    
+    // IP-Info (GeoIP wenn verfügbar, sonst Basic-Infos)
+    $result['ip_info'] = getIpInfo($ip);
+    
+    return $result;
+}
+
+/**
+ * PTR-Record direkt abfragen
+ */
+function getPtrRecord(string $ip, string $version): ?string {
+    if ($version === 'IPv4') {
+        // IPv4: Reverse die Oktette
+        $parts = array_reverse(explode('.', $ip));
+        $ptrDomain = implode('.', $parts) . '.in-addr.arpa';
+    } else {
+        // IPv6: Komplexer - jedes Nibble umkehren
+        $expanded = expandIPv6($ip);
+        $nibbles = str_replace(':', '', $expanded);
+        $reversed = implode('.', array_reverse(str_split($nibbles)));
+        $ptrDomain = $reversed . '.ip6.arpa';
+    }
+    
+    $records = @dns_get_record($ptrDomain, DNS_PTR);
+    
+    if ($records && !empty($records[0]['target'])) {
+        return $records[0]['target'];
+    }
+    
+    return null;
+}
+
+/**
+ * Expandiert eine IPv6-Adresse
+ */
+function expandIPv6(string $ip): string {
+    // Ersetze :: mit der richtigen Anzahl von 0000
+    if (strpos($ip, '::') !== false) {
+        $parts = explode('::', $ip);
+        $left = $parts[0] ? explode(':', $parts[0]) : [];
+        $right = isset($parts[1]) && $parts[1] ? explode(':', $parts[1]) : [];
+        $missing = 8 - count($left) - count($right);
+        $middle = array_fill(0, $missing, '0000');
+        $all = array_merge($left, $middle, $right);
+    } else {
+        $all = explode(':', $ip);
+    }
+    
+    // Jedes Segment auf 4 Zeichen auffüllen
+    $all = array_map(function($segment) {
+        return str_pad($segment, 4, '0', STR_PAD_LEFT);
+    }, $all);
+    
+    return implode(':', $all);
+}
+
+/**
+ * Sammelt Infos über einen Hostnamen
+ */
+function getHostInfo(string $hostname): array {
+    $info = [];
+    
+    // Domain-Teile analysieren
+    $parts = explode('.', $hostname);
+    $tld = end($parts);
+    
+    $info['tld'] = $tld;
+    
+    // Bekannte Hosting-Provider erkennen
+    $providerPatterns = [
+        'amazonaws.com' => 'Amazon AWS',
+        'googleusercontent.com' => 'Google Cloud',
+        'cloudfront.net' => 'Amazon CloudFront',
+        'azure' => 'Microsoft Azure',
+        'hetzner' => 'Hetzner',
+        'ovh' => 'OVH',
+        'digitalocean' => 'DigitalOcean',
+        'linode' => 'Linode',
+        'vultr' => 'Vultr',
+        'contabo' => 'Contabo',
+        'netcup' => 'Netcup',
+        'strato' => 'Strato',
+        'ionos' => 'IONOS',
+        '1und1' => '1&1',
+        'telekom' => 'Deutsche Telekom',
+        'vodafone' => 'Vodafone',
+    ];
+    
+    foreach ($providerPatterns as $pattern => $provider) {
+        if (stripos($hostname, $pattern) !== false) {
+            $info['provider'] = $provider;
+            break;
+        }
+    }
+    
+    return $info;
+}
+
+/**
+ * Basis-Infos zur IP
+ */
+function getIpInfo(string $ip): array {
+    $info = [
+        'type' => 'unknown'
+    ];
+    
+    // Private IP-Bereiche prüfen
+    if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
+        if (preg_match('/^(10\.|172\.(1[6-9]|2[0-9]|3[01])\.|192\.168\.)/', $ip)) {
+            $info['type'] = 'private';
+        } elseif (preg_match('/^(127\.)/', $ip)) {
+            $info['type'] = 'loopback';
+        } else {
+            $info['type'] = 'public';
+        }
+    } else {
+        // IPv6
+        if (preg_match('/^(fc|fd)/i', $ip)) {
+            $info['type'] = 'private';
+        } elseif (preg_match('/^::1$/', $ip) || preg_match('/^fe80:/i', $ip)) {
+            $info['type'] = 'loopback/link-local';
+        } else {
+            $info['type'] = 'public';
+        }
+    }
+    
+    return $info;
+}
diff --git a/api/ssl-check.php b/api/ssl-check.php
new file mode 100644
index 0000000..79e13cb
--- /dev/null
+++ b/api/ssl-check.php
@@ -0,0 +1,164 @@
+<?php
+/**
+ * HexaDNS - SSL Certificate Check API
+ * 
+ * Prüft SSL-Zertifikat-Informationen einer Domain
+ * 
+ * Verwendung: GET /api/ssl-check.php?domain=example.com
+ */
+
+header('Content-Type: application/json; charset=utf-8');
+header('Access-Control-Allow-Origin: *');
+header('Access-Control-Allow-Methods: GET, OPTIONS');
+header('Access-Control-Allow-Headers: Content-Type');
+
+if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
+    http_response_code(200);
+    exit;
+}
+
+$domain = isset($_GET['domain']) ? trim($_GET['domain']) : '';
+
+if (empty($domain)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Domain-Parameter fehlt']);
+    exit;
+}
+
+// Protokoll und Pfad entfernen
+$domain = preg_replace('/^(https?:\/\/)?/', '', $domain);
+$domain = explode('/', $domain)[0];
+$domain = explode(':', $domain)[0]; // Port entfernen
+
+if (!preg_match('/^[a-zA-Z0-9][a-zA-Z0-9\-\.]*\.[a-zA-Z]{2,}$/', $domain)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Ungültiges Domain-Format']);
+    exit;
+}
+
+$startTime = microtime(true);
+$sslData = checkSslCertificate($domain);
+$queryTime = round((microtime(true) - $startTime) * 1000, 2);
+
+echo json_encode([
+    'success' => $sslData['success'],
+    'domain' => $domain,
+    'query_time_ms' => $queryTime,
+    'timestamp' => date('Y-m-d H:i:s'),
+    'ssl' => $sslData
+], JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
+
+/**
+ * Prüft SSL-Zertifikat einer Domain
+ */
+function checkSslCertificate(string $domain): array {
+    $result = [
+        'success' => false,
+        'has_ssl' => false,
+        'is_valid' => false,
+        'error' => null,
+        'certificate' => null
+    ];
+    
+    // Stream Context für SSL
+    $context = stream_context_create([
+        'ssl' => [
+            'capture_peer_cert' => true,
+            'verify_peer' => false,
+            'verify_peer_name' => false,
+        ]
+    ]);
+    
+    // Verbindung herstellen
+    $socket = @stream_socket_client(
+        "ssl://{$domain}:443",
+        $errno,
+        $errstr,
+        10, // Timeout
+        STREAM_CLIENT_CONNECT,
+        $context
+    );
+    
+    if (!$socket) {
+        // Versuche ohne SSL (um zu prüfen ob Server erreichbar)
+        $httpSocket = @fsockopen($domain, 80, $errno, $errstr, 5);
+        if ($httpSocket) {
+            fclose($httpSocket);
+            $result['error'] = 'Kein SSL-Zertifikat auf Port 443 gefunden';
+        } else {
+            $result['error'] = "Verbindung fehlgeschlagen: {$errstr}";
+        }
+        return $result;
+    }
+    
+    $result['has_ssl'] = true;
+    $result['success'] = true;
+    
+    // Zertifikat extrahieren
+    $params = stream_context_get_params($socket);
+    $cert = $params['options']['ssl']['peer_certificate'] ?? null;
+    
+    if ($cert) {
+        $certInfo = openssl_x509_parse($cert);
+        
+        if ($certInfo) {
+            $validFrom = $certInfo['validFrom_time_t'] ?? 0;
+            $validTo = $certInfo['validTo_time_t'] ?? 0;
+            $now = time();
+            
+            $isExpired = $now > $validTo;
+            $isNotYetValid = $now < $validFrom;
+            $result['is_valid'] = !$isExpired && !$isNotYetValid;
+            
+            // Tage bis Ablauf
+            $daysUntilExpiry = floor(($validTo - $now) / 86400);
+            
+            // Subject Alternative Names (SANs)
+            $sans = [];
+            if (isset($certInfo['extensions']['subjectAltName'])) {
+                $sanStr = $certInfo['extensions']['subjectAltName'];
+                preg_match_all('/DNS:([^,\s]+)/', $sanStr, $matches);
+                $sans = $matches[1] ?? [];
+            }
+            
+            // Issuer aufbereiten
+            $issuer = [];
+            if (isset($certInfo['issuer'])) {
+                if (isset($certInfo['issuer']['O'])) $issuer['organization'] = $certInfo['issuer']['O'];
+                if (isset($certInfo['issuer']['CN'])) $issuer['common_name'] = $certInfo['issuer']['CN'];
+                if (isset($certInfo['issuer']['C'])) $issuer['country'] = $certInfo['issuer']['C'];
+            }
+            
+            // Subject aufbereiten
+            $subject = [];
+            if (isset($certInfo['subject'])) {
+                if (isset($certInfo['subject']['CN'])) $subject['common_name'] = $certInfo['subject']['CN'];
+                if (isset($certInfo['subject']['O'])) $subject['organization'] = $certInfo['subject']['O'];
+            }
+            
+            $result['certificate'] = [
+                'subject' => $subject,
+                'issuer' => $issuer,
+                'valid_from' => date('Y-m-d H:i:s', $validFrom),
+                'valid_to' => date('Y-m-d H:i:s', $validTo),
+                'days_until_expiry' => $daysUntilExpiry,
+                'is_expired' => $isExpired,
+                'serial_number' => $certInfo['serialNumberHex'] ?? null,
+                'signature_algorithm' => $certInfo['signatureTypeSN'] ?? null,
+                'san_domains' => $sans,
+                'version' => $certInfo['version'] ?? null,
+            ];
+            
+            // Warnung wenn bald ablaufend
+            if ($daysUntilExpiry <= 30 && $daysUntilExpiry > 0) {
+                $result['warning'] = "Zertifikat läuft in {$daysUntilExpiry} Tagen ab!";
+            } elseif ($isExpired) {
+                $result['error'] = 'Zertifikat ist abgelaufen!';
+                $result['is_valid'] = false;
+            }
+        }
+    }
+    
+    fclose($socket);
+    return $result;
+}
diff --git a/api/whois-lookup.php b/api/whois-lookup.php
new file mode 100644
index 0000000..5dc9ed6
--- /dev/null
+++ b/api/whois-lookup.php
@@ -0,0 +1,365 @@
+<?php
+/**
+ * HexaDNS - WHOIS Lookup API
+ * 
+ * Ruft WHOIS-Informationen für eine Domain ab
+ * 
+ * Verwendung: GET /api/whois-lookup.php?domain=example.com
+ */
+
+header('Content-Type: application/json; charset=utf-8');
+header('Access-Control-Allow-Origin: *');
+header('Access-Control-Allow-Methods: GET, OPTIONS');
+header('Access-Control-Allow-Headers: Content-Type');
+
+if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
+    http_response_code(200);
+    exit;
+}
+
+$domain = isset($_GET['domain']) ? trim($_GET['domain']) : '';
+
+if (empty($domain)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Domain-Parameter fehlt']);
+    exit;
+}
+
+// Nur Root-Domain extrahieren
+$domain = extractRootDomain($domain);
+
+if (!preg_match('/^[a-zA-Z0-9][a-zA-Z0-9\-]*\.[a-zA-Z]{2,}$/', $domain)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Ungültiges Domain-Format']);
+    exit;
+}
+
+$startTime = microtime(true);
+$whoisData = performWhoisLookup($domain);
+$queryTime = round((microtime(true) - $startTime) * 1000, 2);
+
+if ($whoisData === null) {
+    http_response_code(500);
+    echo json_encode(['error' => 'WHOIS-Abfrage fehlgeschlagen']);
+    exit;
+}
+
+echo json_encode([
+    'success' => true,
+    'domain' => $domain,
+    'query_time_ms' => $queryTime,
+    'timestamp' => date('Y-m-d H:i:s'),
+    'whois' => $whoisData
+], JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
+
+/**
+ * Extrahiert die Root-Domain (ohne Subdomain)
+ */
+function extractRootDomain(string $domain): string {
+    $domain = strtolower($domain);
+    $domain = preg_replace('/^(https?:\/\/)?(www\.)?/', '', $domain);
+    $domain = explode('/', $domain)[0];
+    
+    $parts = explode('.', $domain);
+    if (count($parts) > 2) {
+        // Einfache Logik: nimm die letzten 2 Teile
+        // (funktioniert nicht perfekt für .co.uk etc., aber gut genug)
+        return implode('.', array_slice($parts, -2));
+    }
+    
+    return $domain;
+}
+
+/**
+ * Führt WHOIS-Lookup durch
+ */
+function performWhoisLookup(string $domain): ?array {
+    // Primär: Socket-basierte Abfrage (funktioniert ohne shell_exec)
+    $whoisRaw = whoisViaSocket($domain);
+    
+    // Fallback: Shell-Kommando (sicher escaped)
+    if (empty($whoisRaw) && function_exists('shell_exec')) {
+        $escapedDomain = escapeshellarg($domain);
+        $whoisRaw = @shell_exec("whois {$escapedDomain} 2>/dev/null");
+    }
+    
+    if (empty($whoisRaw)) {
+        return null;
+    }
+    
+    // Parse WHOIS-Daten
+    return parseWhoisData($whoisRaw, $domain);
+}
+
+/**
+ * WHOIS-Abfrage über Socket (unabhängig von shell_exec)
+ */
+function whoisViaSocket(string $domain): ?string {
+    $whoisServer = getWhoisServer($domain);
+    
+    if (!$whoisServer) {
+        return null;
+    }
+    
+    $result = queryWhoisServer($whoisServer, $domain);
+    
+    // Prüfe auf Weiterleitungen zu anderen WHOIS-Servern
+    if ($result && preg_match('/Registrar WHOIS Server:\s*(\S+)/i', $result, $matches)) {
+        $referralServer = trim($matches[1]);
+        if ($referralServer && $referralServer !== $whoisServer) {
+            $referralResult = queryWhoisServer($referralServer, $domain);
+            if ($referralResult) {
+                $result = $referralResult;
+            }
+        }
+    }
+    
+    return $result;
+}
+
+/**
+ * Abfrage an einen spezifischen WHOIS-Server
+ */
+function queryWhoisServer(string $server, string $domain): ?string {
+    $port = 43;
+    $timeout = 10;
+    
+    $socket = @fsockopen($server, $port, $errno, $errstr, $timeout);
+    
+    if (!$socket) {
+        return null;
+    }
+    
+    // Setze Stream-Timeout
+    stream_set_timeout($socket, $timeout);
+    
+    // Sende Anfrage
+    fwrite($socket, $domain . "\r\n");
+    
+    // Lese Antwort
+    $response = '';
+    while (!feof($socket)) {
+        $response .= fread($socket, 8192);
+    }
+    
+    fclose($socket);
+    
+    return !empty($response) ? $response : null;
+}
+
+/**
+ * Ermittelt den zuständigen WHOIS-Server für eine TLD
+ */
+function getWhoisServer(string $domain): ?string {
+    $parts = explode('.', $domain);
+    $tld = strtolower(end($parts));
+    
+    // Bekannte WHOIS-Server nach TLD
+    $whoisServers = [
+        // Generische TLDs
+        'com' => 'whois.verisign-grs.com',
+        'net' => 'whois.verisign-grs.com',
+        'org' => 'whois.pir.org',
+        'info' => 'whois.afilias.net',
+        'biz' => 'whois.biz',
+        'name' => 'whois.nic.name',
+        'mobi' => 'whois.dotmobiregistry.net',
+        'pro' => 'whois.registrypro.pro',
+        'aero' => 'whois.aero',
+        'asia' => 'whois.nic.asia',
+        'cat' => 'whois.nic.cat',
+        'coop' => 'whois.nic.coop',
+        'edu' => 'whois.educause.edu',
+        'gov' => 'whois.dotgov.gov',
+        'int' => 'whois.iana.org',
+        'jobs' => 'whois.nic.jobs',
+        'mil' => 'whois.nic.mil',
+        'museum' => 'whois.museum',
+        'post' => 'whois.dotpostregistry.net',
+        'tel' => 'whois.nic.tel',
+        'travel' => 'whois.nic.travel',
+        'xxx' => 'whois.nic.xxx',
+        
+        // Neue gTLDs
+        'app' => 'whois.nic.google',
+        'dev' => 'whois.nic.google',
+        'page' => 'whois.nic.google',
+        'blog' => 'whois.nic.blog',
+        'cloud' => 'whois.nic.cloud',
+        'shop' => 'whois.nic.shop',
+        'store' => 'whois.nic.store',
+        'online' => 'whois.nic.online',
+        'site' => 'whois.nic.site',
+        'website' => 'whois.nic.website',
+        'tech' => 'whois.nic.tech',
+        'io' => 'whois.nic.io',
+        'co' => 'whois.nic.co',
+        'me' => 'whois.nic.me',
+        'tv' => 'whois.nic.tv',
+        'cc' => 'ccwhois.verisign-grs.com',
+        'ws' => 'whois.website.ws',
+        
+        // Europäische ccTLDs
+        'de' => 'whois.denic.de',
+        'at' => 'whois.nic.at',
+        'ch' => 'whois.nic.ch',
+        'li' => 'whois.nic.li',
+        'uk' => 'whois.nic.uk',
+        'fr' => 'whois.nic.fr',
+        'it' => 'whois.nic.it',
+        'es' => 'whois.nic.es',
+        'pt' => 'whois.dns.pt',
+        'nl' => 'whois.domain-registry.nl',
+        'be' => 'whois.dns.be',
+        'pl' => 'whois.dns.pl',
+        'cz' => 'whois.nic.cz',
+        'sk' => 'whois.sk-nic.sk',
+        'hu' => 'whois.nic.hu',
+        'ro' => 'whois.rotld.ro',
+        'bg' => 'whois.register.bg',
+        'hr' => 'whois.dns.hr',
+        'si' => 'whois.register.si',
+        'rs' => 'whois.rnids.rs',
+        'gr' => 'grwhois.ics.forth.gr',
+        'dk' => 'whois.punktum.dk',
+        'se' => 'whois.iis.se',
+        'no' => 'whois.norid.no',
+        'fi' => 'whois.fi',
+        'ie' => 'whois.iedr.ie',
+        'eu' => 'whois.eu',
+        'lu' => 'whois.dns.lu',
+        
+        // Andere ccTLDs
+        'ru' => 'whois.tcinet.ru',
+        'ua' => 'whois.ua',
+        'us' => 'whois.nic.us',
+        'ca' => 'whois.cira.ca',
+        'mx' => 'whois.mx',
+        'br' => 'whois.registro.br',
+        'ar' => 'whois.nic.ar',
+        'au' => 'whois.auda.org.au',
+        'nz' => 'whois.srs.net.nz',
+        'jp' => 'whois.jprs.jp',
+        'kr' => 'whois.kr',
+        'cn' => 'whois.cnnic.cn',
+        'in' => 'whois.registry.in',
+        'sg' => 'whois.sgnic.sg',
+        'hk' => 'whois.hkirc.hk',
+        'tw' => 'whois.twnic.net.tw',
+        'za' => 'whois.registry.net.za',
+    ];
+    
+    // Spezielle Behandlung für .co.uk, .com.au etc.
+    if (count($parts) >= 2) {
+        $sld = $parts[count($parts) - 2];
+        $combinedTld = $sld . '.' . $tld;
+        
+        $secondLevelTlds = [
+            'co.uk' => 'whois.nic.uk',
+            'org.uk' => 'whois.nic.uk',
+            'me.uk' => 'whois.nic.uk',
+            'com.au' => 'whois.auda.org.au',
+            'net.au' => 'whois.auda.org.au',
+            'org.au' => 'whois.auda.org.au',
+            'co.nz' => 'whois.srs.net.nz',
+            'com.br' => 'whois.registro.br',
+        ];
+        
+        if (isset($secondLevelTlds[$combinedTld])) {
+            return $secondLevelTlds[$combinedTld];
+        }
+    }
+    
+    return $whoisServers[$tld] ?? 'whois.iana.org';
+}
+
+/**
+ * Parsed WHOIS-Rohdaten in strukturiertes Format
+ */
+function parseWhoisData(string $raw, string $domain): array {
+    $data = [
+        'raw' => $raw,
+        'parsed' => [
+            'domain_name' => $domain,
+            'registrar' => null,
+            'registrar_url' => null,
+            'creation_date' => null,
+            'expiration_date' => null,
+            'updated_date' => null,
+            'status' => [],
+            'nameservers' => [],
+            'dnssec' => null,
+        ]
+    ];
+    
+    $lines = explode("\n", $raw);
+    
+    foreach ($lines as $line) {
+        $line = trim($line);
+        if (empty($line) || strpos($line, '%') === 0 || strpos($line, '#') === 0) {
+            continue;
+        }
+        
+        // Key: Value Format
+        if (strpos($line, ':') !== false) {
+            list($key, $value) = array_map('trim', explode(':', $line, 2));
+            $keyLower = strtolower($key);
+            
+            // Registrar
+            if (strpos($keyLower, 'registrar') !== false && strpos($keyLower, 'abuse') === false && strpos($keyLower, 'url') === false) {
+                if (empty($data['parsed']['registrar'])) {
+                    $data['parsed']['registrar'] = $value;
+                }
+            }
+            
+            // Registrar URL
+            if (strpos($keyLower, 'registrar') !== false && strpos($keyLower, 'url') !== false) {
+                $data['parsed']['registrar_url'] = $value;
+            }
+            
+            // Erstellungsdatum
+            if (preg_match('/(creation|created|registered)/i', $keyLower) && strpos($keyLower, 'registrar') === false) {
+                if (empty($data['parsed']['creation_date'])) {
+                    $data['parsed']['creation_date'] = $value;
+                }
+            }
+            
+            // Ablaufdatum
+            if (preg_match('/(expir|paid-till)/i', $keyLower)) {
+                if (empty($data['parsed']['expiration_date'])) {
+                    $data['parsed']['expiration_date'] = $value;
+                }
+            }
+            
+            // Aktualisierungsdatum
+            if (preg_match('/(updated|modified|changed)/i', $keyLower) && strpos($keyLower, 'registrar') === false) {
+                if (empty($data['parsed']['updated_date'])) {
+                    $data['parsed']['updated_date'] = $value;
+                }
+            }
+            
+            // Status
+            if (preg_match('/(status|state)/i', $keyLower) && !empty($value)) {
+                $data['parsed']['status'][] = $value;
+            }
+            
+            // Nameserver
+            if (preg_match('/^(name.?server|nserver)/i', $keyLower) && !empty($value)) {
+                $ns = strtolower(explode(' ', $value)[0]);
+                if (!in_array($ns, $data['parsed']['nameservers'])) {
+                    $data['parsed']['nameservers'][] = $ns;
+                }
+            }
+            
+            // DNSSEC
+            if (strpos($keyLower, 'dnssec') !== false) {
+                $data['parsed']['dnssec'] = $value;
+            }
+        }
+    }
+    
+    // Status einzigartig machen
+    $data['parsed']['status'] = array_unique($data['parsed']['status']);
+    
+    return $data;
+}