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: 727

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-727 A Hi Vista CA LNCSCAXFDS0  2319 FRONTIER CALIFORNIA INC. 730      
661-727 0 Hi Vista CA   649C ONVOY, LLC - CA 730   2016-02-24   
661-727 1 Hi Vista CA   2319 FRONTIER CALIFORNIA INC. 730      
661-727 3 Hi Vista CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2009-02-25   
661-727 4 Hi Vista CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-07-30   
661-727 5 Hi Vista CA   649C ONVOY, LLC - CA 730   2016-04-07   
661-727 6 Hi Vista CA   9262 UTILITY TELECOM GROUP, LLC - CA 730   2006-06-21   
661-727 7 Hi Vista CA   649C ONVOY, LLC - CA 730   2016-04-07   
661-727 8 Hi Vista CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2018-09-20   
661-727 9 Hi Vista CA   073H TELNYX LLC 730   2017-08-14   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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