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.

OCN: 1636 UNITED TELEPHONE MUTUAL AID CORP.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
701-256 A Langdon ND LNGDNDXADS2  636      
701-256 1 Langdon ND   636      
701-256 2 Langdon ND   636      
701-256 3 Langdon ND   636      
701-256 4 Langdon ND   636      
701-256 5 Langdon ND   636      
701-256 6 Langdon ND   636      
701-256 7 Langdon ND   636      
701-256 8 Langdon ND   636      
701-256 9 Langdon ND   636      
701-266 A Rock Lake ND RCLKNDXARS2  636      
701-283 A Wales ND WALSNDXARS2  636      
701-496 A Milton ND MLTNNDXARS4  636      
701-549 A Walhalla ND WLHLNDXARS5  636      
701-682 A Munich ND MNCHNDXARS6  636      
701-697 A Sarles ND SRLSNDXARS6  636      

Last updated: Sat, 14 Sep 2019 01:44:23 UTC

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