RFC Errata
RFC 2142, "Mailbox Names for Common Services, Roles and Functions", May 1997
Source of RFC: LegacyArea Assignment: app
Errata ID: 1764
Status: Held for Document Update
Type: Editorial
Publication Format(s) : TEXT
Reported By: Nick Levinson
Date Reported: 2009-04-15
Held for Document Update by: Peter Saint-Andre
Date Held: 2010-09-15
Section 1 & 2 says:
top level domain
It should say:
organization's principal domain name
Notes:
1. The phrase "top level domain" seems to mean 'second-level and top level domains together', and perhaps 'third- to top level domains together' in cases like <example.co.uk>. It is erroneous now that _top level domain_ (_TLD_) is specifically only what comes after the last dot in a domain, and nonreserved TLDs are so registered at IANA.org.
2. I would rather someone else propose replacement phrasing.
3. This is submitted 2009-04-16.
EDITOR'S NOTE (2010-09-15): This matter was discussed on the app-discuss and dnsext mailing lists, and consensus emerged on the phrase "organization's principal domain name". --Peter Saint-Andre