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.

Switch: SNFCCAMMDS7

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
925-627 6 Walnut Creek CA 258E YMAX COMMUNICATIONS CORP. - CA 722   2011-03-09   
925-658 4 Walnut Creek CA 258E YMAX COMMUNICATIONS CORP. - CA 722   2008-03-30   
925-705 8 Walnut Creek CA 258E YMAX COMMUNICATIONS CORP. - CA 722   2008-09-01   
925-891 5 Walnut Creek CA 258E YMAX COMMUNICATIONS CORP. - CA 722   2008-05-31   
925-951 8 Walnut Creek CA 258E YMAX COMMUNICATIONS CORP. - CA 722   2009-01-18   
925-953 8 Walnut Creek CA 258E YMAX COMMUNICATIONS CORP. - CA 722   2008-05-31   
925-954 5 Walnut Creek CA 258E YMAX COMMUNICATIONS CORP. - CA 722   2008-09-01   

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

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