DNS.NF LogoDNS.NF
Find domains sharing authoritative NSResolve target NS and list domains that overlap on authoritative nameservers.
NSAUTHORITATIVESHARED NSCANDIDATESMATCHED

Reverse NS

This scans domains that share one or more authoritative NS with your target.

How This Query Works

Reverse NS identifies domains sharing authoritative name servers with your target through candidate discovery and DNS verification.

  • 1Step 1: resolve authoritative NS for the target domain.
  • 2Step 2: collect candidate domains from reverse IP intelligence on NS infrastructure.
  • 3Step 3: re-resolve candidate NS and keep only domains with real NS overlap.
  • 4Matched count is strict verification output; candidates reflect pre-verification recall.
Authoritative NS3-step VerificationStrict MatchInfrastructure Correlation
Reverse NS results are best-effort from public data plus DNS verification, and may be incomplete.