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: 701 [Rate centres in NPA 701] [Dial plan for NPA 701]

NXX: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
701-557 A Bismarck ND BSMRNDBCOMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 638      
701-557 0 Bismarck ND BSMRNDBCQMD  8054 LEVEL 3 COMMUNICATIONS, LLC - ND 638   2011-06-19   
701-557 1 Bismarck ND BSMRNDBCQMD  8054 LEVEL 3 COMMUNICATIONS, LLC - ND 638   2011-06-27   
701-557 2 Bismarck ND BSMRNDBCQMD  8054 LEVEL 3 COMMUNICATIONS, LLC - ND 638   2011-09-24   
701-557 3 Bismarck ND BSMRNDBCQMD  8054 LEVEL 3 COMMUNICATIONS, LLC - ND 638   2011-09-24   
701-557 4 Bismarck ND BSMRNDBCDS0  9631 QWEST CORPORATION 638   2009-01-29   
701-557 5 Bismarck ND BSMRNDBCDS0  9631 QWEST CORPORATION 638   2008-09-19   
701-557 7 Bismarck ND BSMRNDBCSMD  452F ONVOY, LLC - ND 638   2011-02-17   
701-557 8 Bismarck ND BSMRNDBCSMD  452F ONVOY, LLC - ND 638   2023-12-10   
701-557 9 Bismarck ND BSMRNDBCOMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 638   2004-09-23   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.