7.
, , . , ( Internet BITNET) .
7.1. Internet
Internet, , :
MILnet HOSTMASTER@NIC.DDN.MIL other HOSTMASTER@INTERNIC.NET
, BIND, Internet, BIND. , BIND . , , :
bind-request@uunet.uu.net
7.2.
, , . , registrar@domain hostmaster@domain (- postmaster), . , , SOA " " . whois.