On Fri, Feb 28, 2025 at 9:11 AM Jay <mysi...@gmail.com> wrote: > Every subdomain is in fact a domain name.
Hi Jay, Not necessarily. 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. "Subdomain" has some funky contradictions to it, some of which can only be resolved with administrative knowledge about the DNS zone they're a part of. That's what makes them a less than useful concept for an outside observer trying to categorize a set of fully qualified domain names (FQDNs). Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/
