ATIS-0300070 › Complete Document History
Guidelines for the Administration of Telephone Numbers

Complete Current Edition:
   2018 EDITION - Guidelines for the Administration of Telephone Numbers - April 1, 2018

Obsolete Revision Information:
   2012 EDITION - GUIDELINES FOR THE ADMINISTRATION OF TELEPHONE NUMBERS - Jan. 1, 2012
   2011 EDITION - GUIDELINES FOR THE ADMINISTRATION OF TELEPHONE NUMBERS - Sept. 1, 2011
   2010 EDITION - GUIDELINES FOR THE ADMINISTRATION OF TELEPHONE NUMBERS - March 1, 2010