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Start of authority

(SOA) A type of resource record used by the Domain Name System (DNS) to give meta-data about a set of domain name data (the contents of a “zone file”). An SOA record has the following parameters:
Serial: the zone serial number – a version number for the zone file.
Refresh: the number of seconds between update requests from secondary and slave name servers.
Retry: the number of seconds the secondary or slave will wait before retrying when an attempt fails.
Expire: (time to live – TTL) the number of seconds a master or slave will wait before considering cached data out-of-date.
Minimum: previously used to determine the minimum TTL, this offers negative caching.


Read Also:

  • Start of header

    character (SOH) mnemonic for ASCII 1. [What header?] (1996-05-31)

  • Start of text

    character (STX) Mnemonic for ASCII 2. (1996-05-31)

  • Start on

    verb 1. (intransitive, preposition) (Brit, informal) to pick a quarrel with (someone)

  • Start over

    Begin again, as in This article is no good; I’ll have to start over. [ Early 1900s ]

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