MDA - internet/dns/primary-dns-server

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primary-dns-server

- DNS Server [ superclass ]

- Secondary DNS Server [ to ]
- DNS Zone [ what ]

- Secondary DNS Server [ referral ]
- SOA record [ referrer ]

Comment:: this is encoded in the SOA (start of authority) record -- hostmaster, serial number, caching information
Comment:: also called 'master' (of a zone)
Comment:: holds authoritative information about a zone -- there can only be one

References:

http://www.menandmice.com/onli...y/primary.server.htm