DNS Lookup
Query A, AAAA, CNAME, TXT, and other DNS records for a domain.
DNS lookup and propagation tools
Check DNS records, nameserver delegation, propagation state, reverse DNS, resolver behavior, and encrypted DNS endpoints.
A Record Lookup
Check IPv4 A records for a domain or hostname.
AAAA Record Lookup
Check IPv6 AAAA records for a domain or hostname.
CNAME Lookup
Check CNAME alias records for a domain or hostname.
NS Lookup
Check authoritative name servers and delegation for a domain.
Delegation / Authoritative NS Check
Verify delegation and inspect the authoritative nameserver set for a domain.
Glue Record Check
Check whether in-bailiwick nameservers have the required glue A and AAAA records.
PTR / Reverse DNS Lookup
Check PTR records and reverse DNS hostnames for an IPv4 or IPv6 address.
DoH Endpoint Check
Test a DNS-over-HTTPS endpoint with a live JSON query and inspect the response.
DoT Endpoint Check
Review a DNS-over-TLS endpoint target and browser-safe preflight signals before deeper validation.
DoQ Endpoint Check
Review a DNS-over-QUIC resolver hostname with browser-safe preflight signals before deeper validation.
DDR / Designated Resolver Check
Inspect HTTPS and SVCB records that may be used for designated resolver discovery.
Resolver Information Check
Inspect which public recursive resolver answered a DNS query and review the returned record context.
DNSSEC Check
Validate whether a domain has DNSSEC configured correctly.
DNS Propagation Check
Verify whether recent DNS changes are visible across resolvers.
MX Lookup
Inspect mail exchange records and delivery destinations for a domain.