Free DNS & domain tools
No signup, instant results, built on public DNS-over-HTTPS. From the team that runs custom-domain infrastructure for 5,000+ production customer sites at Lindo.ai.
CNAME Checker
Resolve a CNAME chain from two resolvers, flag apex issues, and verify the target.
CNAME Lookup
Quick CNAME record lookup for any hostname.
DNS Propagation Checker
Check A/AAAA/CNAME/TXT/MX across resolvers to see if a change has propagated.
DMARC Checker
Parse and grade a DMARC record with a plain-English explanation of each tag.
SPF Checker
Validate an SPF record and count lookups against the 10-lookup limit.
DKIM Checker
Look up a DKIM public key by selector and inspect the key.
SSL Checker
Inspect issued certificates: issuer, expiry, SANs, wildcard detection.