THE RECORDS BEHIND THE NAME

DNS lookup.

Explore resource records, mail routing and reverse DNS.

Public IPs automatically use PTR. Common records queries A, AAAA, MX, NS, CNAME, TXT, SOA and CAA separately.

DNS

209.131.128.0

0 answer records · Partial

Cloudflare 1.1.1.1 · HTTPS2026-09-20T23:24:23+00:00View JSON

Reverse query: 0.128.131.209.in-addr.arpa

Registration / WHOIS →

PTR: resolver returned SERVFAIL. This is a DNS error, not an empty record set.

PTRSERVFAILAD noEDE(22): No Reachable Authority at delegation 128.131.209.in-addr.arpa.; EDE(23): Network Error [2600:180b:2001::1]:53 returned REFUSED for 0.128.131.209.in-addr.arpa PTR

AD indicates that the resolver reports DNSSEC-validated data. “AD no” can also mean the zone is unsigned. NXDOMAIN is a DNS result, not a domain-availability check.

No answer records were returned. See the response codes and warnings above.

Queries are sent to Cloudflare 1.1.1.1 over HTTPS. Results reflect its public DNS view and cache; they may differ from your local network. TXT strings retain their DNS quoting. Common records does not enumerate every name or record in a zone.