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71 tools · 12 groups
Use our free IPv6 website compatibility checker to verify if your domain is IPv6 ready. Our compatibility checker performs live DNS lookups for AAAA records, mail servers, and name servers.
Generate properly formatted CAA DNS records for any domain in five formats - Generic CAA, BIND zone, Legacy TYPE257, tinydns, and dnsmasq. Pick from 60+ certificate authorities, control wildcard and non-wildcard issuance, add an iodef contact, or pull a domain's current policy as a starting point.
Use Our tool to Check if your domain has DNSSEC (DNS Security Extensions) enabled. Ensure your domain is protected against DNS spoofing and cache poisoning attacks by validating the presence of DNSSEC signatures.
Instantly retrieve and verify DNSKEY records for any domain. Confirm DNSSEC is enabled, inspect published key data, identify KSK and ZSK types, and troubleshoot missing or misconfigured DNSSEC keys.
Validate your domain's SPF record with our free SPF Checker tool.
Check your domain's MX records and mail server configuration instantly. Get mail exchange servers, priority values, IP addresses, ASN, plus A, AAAA, and CNAME records for complete email and domain infrastructure visibility.
Check CAA DNS records for any domain and quickly verify certificate authority permissions with our online CAA record checker tool.
Generate DMARC records to help secure your domain with our free tool. Quickly set up DMARC policies and defend your domain against spoofing or phishing attacks.
Check your domain's DMARC record in seconds with our free lookup tool.
Resolve any IP address to its hostname with a free reverse DNS (PTR) lookup. Enter an IPv4 or IPv6 address and get the canonical hostname in seconds.
Look up a domain's DKIM record by selector and verify its email signing setup. Retrieve the published key from DNS, break down the record tags, and spot missing or malformed DKIM configuration.
Enter a CNAME target hostname to discover every domain that points to it via a CNAME record. Search with exact matching or wildcards for infrastructure mapping and security research.
Enter a nameserver hostname to discover every domain that uses it for DNS resolution. Useful for hosting provider research and infrastructure investigations.