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ENUM

  • Electronic Number Mapping System
  • NamingAuthority PoinTer Resource Record
1-(800)-555-1234
ORIGIN 4.3.2.1.5.5.5.0.0.8.1.e164.arpa.
IN NAPTR 100 10 "U" "E2U+sip" "!^.*$!sip:[email protected]!" .
IN NAPTR 102 10 "U" "E2U+email" "!^.*$!mailto:[email protected]!" .