DNS & Domain tools
Query DNS records live from your browser over DNS-over-HTTPS, check reverse zones, and validate SPF, DKIM and DMARC policy before it breaks mail delivery.
DNS Lookup
Query any DNS record type - A, AAAA, MX, TXT, NS, SOA, CAA, SRV, DNSKEY and more - straight from your browser over DNS-over-HTTPS.
DNS Propagation Check
Query the same record at multiple public resolvers at once and compare the answers - the fastest way to see whether a DNS change has landed everywhere.
Reverse DNS Lookup
Resolve an IPv4 or IPv6 address to its PTR record, with the in-addr.arpa or ip6.arpa name shown so you can see exactly what was queried.
SPF / DMARC Analyzer
Fetch and analyse a domain's SPF, DMARC and DKIM records, flagging the lookup limits and weak policies that quietly break mail authentication.
WHOIS / RDAP Lookup
Look up domain registration data over RDAP - the structured, JSON successor to WHOIS - including registrar, status codes, dates and nameservers.