Free Online DNS, Network & SEO Tools

DNS Lookup Check A, AAAA, MX, TXT, and CNAME records instantly. DNS Propagation Checker Verify DNS updates across global server locations. DNS Speed Test Benchmark public resolvers for latency. Domain to IP Converter Convert domain names to IPv4/IPv6 with geolocation. NS Lookup Discover authoritative nameservers with provider detection. MX Lookup Find mail exchange records and server details. CNAME Lookup Trace complex CNAME target record chains. Reverse DNS Lookup Find hostnames associated with any IP address. Domain Validation Validate setup against security best practices. Domain Age Checker Check domain registration history and dates.

SPF Record Checker Validate Sender Policy Framework records to stop spoofing. DMARC Checker Analyze domain message authentication and reporting. DKIM Checker Verify public cryptographic keys for emails. SMTP Server Test Test mail server handshakes and relay availability. Email Header Analyzer Deconstruct raw email paths and routing metrics. DMARC Generator Generate custom security reporting policies. BIMI Checker Verify Brand Indicators and SVG logotypes.

WHOIS Lookup Retrieve comprehensive domain registration data. Domain Availability Check domain status across multiple TLDs. Subdomain Finder Discover hidden subdomains via transparency logs. CMS Detector Identify WordPress, Shopify, or custom platforms. Domain Health Check Run complete server and security health grades. Link Analyzer Extract internal vs external link matrices. Robots.txt Tester Test crawler permissions against paths. Sitemap Validator Validate XML sitemap syntax and counts. Meta Tag Generator Build optimized titles, descriptions, and OpenGraph. Redirect Checker Trace status code redirection steps (301/302).

Online Ping Tool Measure network packet round-trip latencies. Traceroute Map intermediate router hops to destinations. Port Checker Test open/closed TCP service ports remotely. HTTP Headers Checker Inspect server headers, cookies, and security flags. SSL Certificate Checker Analyze cryptographic chain parameters and expiry. What Is My IP Display public IPv4/IPv6 client details. What Is My ISP Identify internet service provider and ASN data. Network Speed Test Measure download and upload throughput.

IP Lookup Find geographical coordinates and ASN info. IP Blacklist Check Scan IPs across major real-time DNSBL databases. MAC Address Lookup Identify hardware manufacturer details from MAC prefixes. ASN Lookup Retrieve routing policies and announced prefixes. Subnet Calculator Calculate network ranges, netmasks, and hosts. IPv4 to IPv6 Converter Translate IP notations seamlessly. IPv6 Subnet Calculator Parse and analyze IPv6 address blocks. IP Range Expander Expand CIDR blocks into target IP sequences. Reverse IP Lookup Find websites sharing a single hosting IP.

QR Code Generator Generate high-res QR codes for URLs and text. Password Generator Create uncrackable cryptographic passwords. Hash Generator Compute cryptographic checksum hashes. Base64 Encoder/Decoder Encode or decode string payloads safely. URL Encoder/Decoder Encode reserved characters for HTTP safety. JSON Formatter Beautify and validate JSON structural data. HTML Encoder/Decoder Convert symbols into safe HTML representations. Timestamp Converter Convert epoch values to readable calendar dates. UUID Generator Generate unique identifiers for databases. Morse Code Translator Translate text messages into Morse signals. Binary Converter Convert binary bytes into readable strings. Sitemap Generator Auto-generate structural XML sitemaps.