Name collisions have been an issue dating back years. Back in 2013 when ICANN introduced several new TLDs they also introduced a Name Collision Occurrence Management Framework to deal with the problem.
… One TLD that appears to publish controlled interruption DNS records is .kids. For example, querying DNS for the MX or SRV record for the .kids TLD yields the ‘your-dns-needs-immediate.attention.kids’ name in response. For some reason, however, contrary to the framework from ICANN, the .kids TLD publishes no A record at the root level.
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The .ws country-level TLD (ccTLD) was created for Western Samoa and marketed as a global TLD that could stand for “website.” When a domain name at the .ws TLD expires (or if it is a new name that was never registered), DNS servers will never return an `NXDOMAIN` response. Rather, the .ws TLD continues to hand out an IP address and MX server…
… The .vg country-level TLD belongs to the British Virgin Islands and, like the .ws ccTLD, when a name at .vg expires (or if it is a new name that was never registered), DNS servers will respond with an IP address. However, unlike the .ws TLD, .vg doesn’t provide an MX server for the domain name.
…..Besides the official list of TLDs sanctioned by ICANN, there are also quite a few second-level registrations that people have turned into their own “TLDs,” that also do not respond properly to zombified DNS names. For example, sites such as “com.de” are technically second-level registrations at the .de TLD, but they offer registrations at the third level, billing themselves as “Germany’s newest domain extension.”
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… One TLD that appears to publish controlled interruption DNS records is .kids. For example, querying DNS for the MX or SRV record for the .kids TLD yields the ‘your-dns-needs-immediate.attention.kids’ name in response. For some reason, however, contrary to the framework from ICANN, the .kids TLD publishes no A record at the root level.
Zombified DNS names
Name collisions aren’t the only situations that can cause a TLD to act strangely. Some do not respond properly when presented with names that have expired or never existed. In these TLDs, unregistered and expired domain names still resolve to IP addresses. Some of these TLDs even publish MX records and collect emails for the names in question.…..
The .ws country-level TLD (ccTLD) was created for Western Samoa and marketed as a global TLD that could stand for “website.” When a domain name at the .ws TLD expires (or if it is a new name that was never registered), DNS servers will never return an `NXDOMAIN` response. Rather, the .ws TLD continues to hand out an IP address and MX server…
… The .vg country-level TLD belongs to the British Virgin Islands and, like the .ws ccTLD, when a name at .vg expires (or if it is a new name that was never registered), DNS servers will respond with an IP address. However, unlike the .ws TLD, .vg doesn’t provide an MX server for the domain name.
…..Besides the official list of TLDs sanctioned by ICANN, there are also quite a few second-level registrations that people have turned into their own “TLDs,” that also do not respond properly to zombified DNS names. For example, sites such as “com.de” are technically second-level registrations at the .de TLD, but they offer registrations at the third level, billing themselves as “Germany’s newest domain extension.”
read more
