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RFC 1123, "Requirements for Internet Hosts - Application and Support", October 1989

Source of RFC: Legacy

Errata ID: 1081
Status: Rejected
Type: Technical
Publication Format(s) : TEXT

Reported By: Frank Ellermann
Date Reported: 2007-11-20
Rejected by: Lisa Dusseault
Date Rejected: 2008-07-14

Section 2.1 says:

                        However, a valid host name can never
have the dotted-decimal form #.#.#.#, since at least the
highest-level component label will be alphabetic.

It should say:

                        However, a valid host name can never
have the dotted-decimal form #.#.#.#, since at least the
highest-level component label will be not all-numeric.

Notes:

RFC 3696 section 2 states: "There is an additional rule that essentially requires that top-level domain names not be all-numeric." The eleven IDN test TLDs created in September 2007 contain hyphen-minus as specified in the IDNA RFCs.
--VERIFIER NOTES--
This errata is in conflict with errata 1353. A new I-D and community consensus are probably needed.

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