Check how a hostname resolves across multiple public DNS resolvers worldwide.
DNS records are cached per their TTL, so after a change different resolvers may answer differently until old entries expire. This tool queries several public resolvers and reports whether they agree yet.
example.com → agreed across 4 resolvers: 93.184.215.14Usually up to the record's TTL — commonly 5 minutes to 24 hours. Lower the TTL before a planned change.
Resolvers returned different answers, so cached old values are still expiring. Wait one TTL and check again.
Each resolver caches independently. Stale caches, geo-steered answers, and round-robin records can all cause disagreement.