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: 518

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
701-518 A Bismarck ND BSMRNDBCXUX  318J COMCAST IP PHONE, LLC 638      
701-518 0 Bismarck ND   073H TELNYX LLC 638   2023-10-15   
701-518 1 Bismarck ND   318J COMCAST IP PHONE, LLC 638   2023-07-07   
701-518 2 Bismarck ND   6701 AERIAL COMMUNICATIONS, INC. 638   2024-10-24   
701-518 3 Bismarck ND   6701 AERIAL COMMUNICATIONS, INC. 638   2024-10-24   
701-518 4 Bismarck ND   6701 AERIAL COMMUNICATIONS, INC. 638   2025-04-05   
701-518 6 Bismarck ND   6701 AERIAL COMMUNICATIONS, INC. 638   2025-06-05   
701-518 7 Bismarck ND   6701 AERIAL COMMUNICATIONS, INC. 638   2025-06-05   
701-518 8 Bismarck ND   624H ONVOY SPECTRUM, LLC 638   2023-11-28   
701-518 9 Bismarck ND   624H ONVOY SPECTRUM, LLC 638   2023-11-28   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.