Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 855

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-855 A Arvin CA ARVNCA11RS0  9740 PACIFIC BELL 734      
661-855 0 Arvin CA   6529 T-MOBILE USA, INC. 734   2015-07-10   
661-855 1 Arvin CA   6529 T-MOBILE USA, INC. 734   2015-07-10   
661-855 2 Arvin CA   9740 PACIFIC BELL 734      
661-855 3 Arvin CA   6529 T-MOBILE USA, INC. 734   2015-07-10   
661-855 4 Arvin CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734   2005-07-26   
661-855 5 Arvin CA   6529 T-MOBILE USA, INC. 734   2015-12-18   
661-855 6 Arvin CA   6529 T-MOBILE USA, INC. 734   2015-07-10   
661-855 7 Arvin CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734   2013-10-05   
661-855 8 Arvin CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 734   2007-09-03   
661-855 9 Arvin CA   6529 T-MOBILE USA, INC. 734   2013-12-19   

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

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