Every zone is free to divide itself up any way it sees fit. Different TLD's use different strategies. Some are broken down geographically (Canada does it this way); some are broken down by type (the UK uses this method: commercial, educational, etc.); some are not broken down by any regular scheme (Japan). Aditionally, the domain being subdomained may (or may not) place any arbitrary order on the subdivision. These restrictions are purely arbitrary and have no relation to the DNS process.

In reply to RE: RE: Getting hostname, domainname and subdomainname by lhoward
in thread Getting hostname, domainname and subdomainname by ZZamboni

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