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: 949

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-949 A Lancaster CA LNCSCAXG94K  2319 FRONTIER CALIFORNIA INC. 730      
661-949 0 Lancaster CA   2319 FRONTIER CALIFORNIA INC. 730      
661-949 1 Lancaster CA   2319 FRONTIER CALIFORNIA INC. 730      
661-949 2 Lancaster CA   2319 FRONTIER CALIFORNIA INC. 730      
661-949 3 Lancaster CA   2319 FRONTIER CALIFORNIA INC. 730      
661-949 4 Lancaster CA   829J PAETEC ITEL, LLC 730   2007-11-12   
661-949 5 Lancaster CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-949 6 Lancaster CA   2319 FRONTIER CALIFORNIA INC. 730      
661-949 7 Lancaster CA   2319 FRONTIER CALIFORNIA INC. 730      
661-949 8 Lancaster CA   2319 FRONTIER CALIFORNIA INC. 730      
661-949 9 Lancaster CA   2319 FRONTIER CALIFORNIA INC. 730      

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

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