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: 623

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
619-623 A Chula Vista CA ESCNCAKYGT0  6664 SPRINT SPECTRUM, L.P. 732      
619-623 0 Chula Vista CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732   2005-12-01   
619-623 1 Chula Vista CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732   2005-12-01   
619-623 2 Chula Vista CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732   2005-12-01   
619-623 3 Chula Vista CA   318J COMCAST IP PHONE LLC 732   2005-12-11   
619-623 4 Chula Vista CA SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2006-07-29   
619-623 5 Chula Vista CA SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2006-07-29   
619-623 6 Chula Vista CA ESCNCAKYGT0  6664 SPRINT SPECTRUM, L.P. 732   2005-09-22   
619-623 7 Chula Vista CA   5562 METROPCS, INC. 732   2005-09-22   
619-623 8 Chula Vista CA   5562 METROPCS, INC. 732   2005-11-18   
619-623 9 Chula Vista CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732   2005-12-01   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.