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.

San Francisco: Montrose-Evergreen DA, CA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
628-977 7 SNJUCACL7MD  965H FRACTEL, LLC 722   2020-09-10   
628-977 8 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2020-09-11   
628-977 9 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2022-11-06   

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

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