Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-607 A Waldorf MD WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 236      
240-607 0 Waldorf MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 236      
240-607 1 Waldorf MD   2589 US LEC OF MARYLAND, INC. 236   2006-04-21   
240-607 2 Waldorf MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2006-08-12   
240-607 3 Waldorf MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 236      
240-607 4 Waldorf MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 236      
240-607 5 Waldorf MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-607 6 Waldorf MD   4773 XO MARYLAND, LLC 236   2005-05-23   
240-607 7 Waldorf MD   4773 XO MARYLAND, LLC 236   2005-05-23   
240-607 8 Waldorf MD   4773 XO MARYLAND, LLC 236   2005-05-23   
240-607 9 Waldorf MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2006-08-12   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.