On Fri, Feb 28, 2025 at 12:50 PM David Conrad <d...@virtualized.org> wrote: > On Feb 28, 2025, at 12:18 PM, William Herrin <b...@herrin.us> wrote: > > Remember my example cat.p.dirtside.com? P.dirtside.com is a subdomain > > of dirtside.com. It's an administrative grouping of domain names that > > have a particular characteristic. However, p.dirtside.com is NOT a > > domain name. It has no DNS records of its own. Only subsidiaries like > > cat.p.dirtside.com exist and have DNS records. > > Hmm. > > I would definitely have said “p.dirtside.com" is a subdomain.
Hi Dave, I agree that "p.dirtside.com" is a subdomain. Recheck what I said. It's not a domain name, no more so than "sdkflkdfgfsgdfg". That's the contradiction. It gets worse. Is "cat.p.dirtside.com" a subdomain? It's definitely a domain name. You can know it's a subdomain if you find another domain name like abc.cat.p.dirtside.com. But if you don't find another name, how can you as an external observer know that cat.p.dirtside.com is NOT a subdomain? Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/
