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.
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LATA: 650 BILLINGS MT [Rate centres in LATA]

OCN: 6529 T-MOBILE USA, INC.

<< 1 2

NPA-NXX BLOCK Rate Centre Region Switch LIR Eff date Disc date
406-969 7 Billings MT     2024-03-23   
406-970 4 Billings MT BLNGMTMAXMD    2021-08-22   
406-970 5 Billings MT BLNGMTMAXMD    2021-08-22   
406-970 6 Billings MT BLNGMTMAXMD    2021-08-22   
406-970 8 Billings MT BLNGMTMAXMD    2021-06-11   
406-970 9 Billings MT BLNGMTMAXMD    2021-06-11   

<< 1 2

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

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