DNS inspector
DNS lookup and propagation checker
See every DNS record for a domain with its TTL, check that the nameservers answer, and compare what Cloudflare, Google and Quad9 return. Use it after changing DNS or moving hosts, or when a site cannot be found.
We check from the outside, the way visitors see your site, and keep a simple log of sites checked. Privacy policy.
How it works
What this checks
- Records and TTLs A, AAAA, CNAME, MX, NS, TXT, CAA and more, with how long each answer may be cached.
- Propagation The same question sent to Cloudflare, Google and Quad9, so you can see whether a change has reached the big public resolvers.
- Nameserver health Whether the nameservers listed for the domain answer directly, and whether DNSSEC validates or is broken.
- Reverse DNS and network owners The PTR name and the owning network for each server address.
- Common mistakes A missing www record, an alias (CNAME) pointing at a name that no longer exists, and TTLs that are very long or very short.