DNS Tech Support Training Courses DNSSEC Consulting DNS Analysis System Audit Customer Portal
The DNS Institute
Documentation Implementations Research DNS History Free DNS Tools

Still serving expired domains (2025-04)

For over five years, we have been reporting about DNS vulnerabilities, anomalies, and misconfigurations. Today's research is about nameservers that continue to serve for old, non-existent domains, that is, domains that are not registered and not delegated by what should be their parents. These examples may indicate losing track of customers or domains, still getting paid or contracted to serve, backups mistakenly restored, lack of maintenance or periodic configuration reviews, or simple miscommunication about removed parent domains, etc.

A couple examples are expired qseven7pt.top still being served by 15 dnspod.com nameservers and sonyonline.net still being served by one pendingrenewaldeletion.com nameserver and three daybreakgames.com nameservers. Likely millions of expired domains are still configured.

Here are many examples of domains under now removed TLDs that are still being authoritatively served. Some of these TLDs have been dead for several years.

There are many other domains under those dead TLDs still active too. Note that we didn't also check if web or mail service is still active.

Some expired TLDs have unused (because not delegated) parking details or placeholder records still hosted by name services, such as adac, afamilycompany, cityeats, epost, flsmidth, meo, sapo, spiegel. Other dead TLDs with nameservers that still are authoritative for them include:

In most cases above, there is no parent delegating to the authoritative nameservers, but we did find a few. So two levels: working delegations and then authoritative. The following expired TLDs have parent nameservers which are still delegating for some children which also are still serving authoritatively: an (ja.net nameserver), lancaster (Afnic), and mutual (Vercara).

What are you using to maintain and check your DNS? Contact us to learn about our DNS Institute DNS Analyzer which has over 200 checks for IETF RFC specifications and best practices, government requirements, and registry guidelines.


Contact Us | About | Site Map |  Gab |  Twitter