SharkDNS Live Query
Shared NS
Discover domains that share name-server infrastructure with a target.
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Search a domain to find other domains sharing NS infrastructure.
How This Query Works
Reverse NS identifies domains sharing authoritative name servers with your target.
The target domain is resolved to its authoritative NS set.
Candidate domains are gathered from public infrastructure observations.
Final matches keep domains with confirmed name-server overlap.
Authoritative NSInfrastructure CorrelationVerified Overlap
Related Guides
Short articles explaining when and why to use this query.
Reverse NS lookup and shared nameservers
3 min readDiscover domains that share authoritative name-server infrastructure with a target.
What is DNS lookup used for?
4 min readUse DNS lookup to inspect records, verify routing, troubleshoot mail, and compare public DNS visibility.
Reverse IP lookup explained
3 min readFind domains observed on the same IPv4 address and understand shared hosting or infrastructure relationships.