Seeing the old DNS value after a change does not always mean the edit failed.
Check these items
- Authoritative location: confirm you edited the DNS provider actually serving the domain's nameservers.
- TTL: recursive resolvers may cache the previous record until its TTL expires.
- Local cache: operating systems, routers, browsers, and applications can maintain their own DNS-related caches.
- Different record types: an old AAAA record can still send IPv6-capable clients somewhere different even after an A record changed.
Compare the response from the authoritative nameserver with the response from public recursive resolvers. If the authoritative answer is correct but recursive resolvers differ, caching is usually the explanation.
