| ▲ | toast0 5 hours ago | |
> with a seemingly infinite possible combinations Verisign claimed approximately 22,000 third level domains [1] in July 2026. I don't see an estimate of the number of shared second level domains, but it's finite. The current public suffix list includes 10414 names [2]; so at maximum, the list would approximately triple in size --- not ideal, but feasible. Edit: another post [3] claims approximately 2000 second levels names with multiple registrations; that's only a 20% increase in size for the existing list, which is again a lot, but feasible. There's some more specific data in an issue for the suffix list [4], that shows there were nine second level domains with multiple registered names underneath them, one of which might all be the same registrant (domain.name)... Nine would be totally doable, if the request came from Verisign... [1] https://itp.cdn.icann.org/en/files/consensus-policies/fessen... [2] including some with wildcards, re: your other post | ||
| ▲ | mixdup 3 hours ago | parent [-] | |
22,000 now, but there was no limit and more importantly no rhyme or reason or other way to tell what was a third level registration and what was a subdomain on a normal second level registration Verisign could have published a list of every third level registration, it wasn't an impossible problem to solve, but it is different than static regional TLDs like .co.uk or .<state>.us | ||