STD
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... Reynolds, J., and J. Postel, "Assigned Numbers", STD 2, RFC 1700hist(-> 3232), October 1994. ...
... Mockapetris, P., "Domain names - concepts and facilities", STD 13, RFC 1034std13, November 1987. ...
... Mockapetris, P., "Domain names - Implementation and Specification", STD 13, RFC 1035std13, November 1987. ...
... Partridge, C., "Mail routing and the domain system", STD 14, RFC 974(-> 2821prop), January 1986. ...