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: 619 [Rate centres in NPA 619] [Dial plan for NPA 619]

NXX: 621

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
619-621 A Chula Vista CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732      
619-621 0 Chula Vista CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2006-10-27   
619-621 1 Chula Vista CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732   2007-05-03   
619-621 2 Chula Vista CA SNDKCA88DS0  7453 US TELEPACIFIC CORP. - CA 732   2007-03-11   
619-621 3 Chula Vista CA SNDKCA88DS2  7453 US TELEPACIFIC CORP. - CA 732   2007-03-11   
619-621 4 Chula Vista CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2011-02-16   
619-621 5 Chula Vista CA   318J COMCAST IP PHONE LLC 732   2006-12-06   
619-621 6 Chula Vista CA SNDGCA0242Z  516C AT&T CORP. 732   2016-06-07   
619-621 7 Chula Vista CA ESCNCAKYGT0  6664 SPRINT SPECTRUM, L.P. 732   2008-01-17   
619-621 8 Chula Vista CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732   2008-11-21   
619-621 9 Chula Vista CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732   2007-05-03   

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.