Gary Kline wrote:
well, i've certainly asked more ignorant q's, so hrer goes:
what is a ``zone''? i do my own dns and have since 04/2001.
A zone is a group of related DNS records all under the same administrative control. 'Related' meaning they all end in the same sequence of labels. Zone boundaries are determined pretty much by delegation to another set of DNS servers.So there's a '.org' zone containing primarily the NS records for all the domains registered under .org. This is distinct from the 'thought.org'
zone you control and here all the sub-entries like www.thought.org or plato.thought.org are part of the same zone. It's not an entirely cut and dried definition, but you can think of a zone as 'the chunk of the DNS space that one person controls.'
thought.org is my one domain, altho i've got several virtual websites.
'domain' in DNS-speak is any sequence of labels[*] known to the DNS. So
even if the DNS data is a host name, an e-mail address, the name of a
whole network, a crypto key for DKIM or DNSSEC or some aggregate service name
hosted across several different servers via SRV records, they're all domains.
Domains can be absolute (ie. from the root of the DNS) or relative to some
intermediate domain.
ie. 'thought.org' is your only zone, although you've got several domains
within it for virtual websites.
Cheers,
Matthew
[*] And a 'label' is a sequence of characters not including the separator
character '.' -- a domain is hence a sequence of labels joined together
by '.' characters. It's conceptually like the distinction between filename
and path
--
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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