About these results
This page shows the NSEC records for mx253.secure-mailgateway.com. NSEC records provide authenticated denial of existence in DNSSEC-signed zones. They also expose the next existing name in the zone, which makes it possible to enumerate all domain names in a zone.
Find other DNS records for mx253.secure-mailgateway.com:
The results on this page are freshly fetched just for you when you loaded this page. Wirewiki queried the authoritative DNS servers for mx253.secure-mailgateway.com. That means that these results are guaranteed to be accurate, because there are no caches in between that could potentially cause staleness.
To look up NSEC records for another hostname or domain name, go back to NSEC lookup, or use DNS lookup to find all DNS records.