SharkDNS Live Query
Reverse MX
Find domains sharing mail exchanger infrastructure with a domain or MX host.
No rows yet
Search a domain to find other domains sharing MX infrastructure.
How This Query Works
Reverse MX performs overlap matching on mail exchanger records.
Domain input resolves target MX records before correlation.
Candidates are discovered from public infrastructure observations.
Final results keep domains with confirmed shared MX hosts.
MX RevalidationMail InfrastructureShared Hosts
Related Guides
Short articles explaining when and why to use this query.
Reverse MX lookup for mail infrastructure
3 min readFind domains that share mail exchanger hosts and understand email routing relationships.
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.