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Interchangeable NPA and central office codes: Revision history


For any version listed below, click on its date to view it. For more help, see Help:Page history and Help:Edit summary. (cur) = difference from current version, (prev) = difference from preceding version, m = minor edit, → = section edit, ← = automatic edit summary

16 April 2025

12 July 2023

26 May 2023

28 January 2022

27 November 2021

10 May 2021

18 January 2021

3 January 2021

21 December 2020

30 August 2020

23 August 2020

22 August 2020

21 August 2020

19 March 2020

6 March 2018

23 May 2015

9 November 2013

11 March 2012

10 March 2012