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.

NPA: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 515

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-515 A Hi Vista CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
661-515 0 Hi Vista CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2018-11-23   
661-515 1 Hi Vista CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2018-11-23   
661-515 2 Hi Vista CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2018-11-23   
661-515 3 Hi Vista CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2018-12-20   
661-515 4 Hi Vista CA   649C ONVOY, LLC - CA 730   2021-07-22   
661-515 5 Hi Vista CA   649C ONVOY, LLC - CA 730   2019-03-03   
661-515 6 Hi Vista CA   649C ONVOY, LLC - CA 730   2019-03-03   
661-515 8 Hi Vista CA   624H ONVOY SPECTRUM, LLC 730   2021-07-22   
661-515 9 Hi Vista CA   624H ONVOY SPECTRUM, LLC 730   2021-11-07   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.