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.

Chula Vista, CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
858-902 7 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2024-08-03   
858-902 8 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2024-08-03   
858-902 9 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2024-08-03   
858-910 A SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-910 0 SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2021-05-31   
858-910 1 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-06-17   
858-910 2 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-06-17   
858-910 3 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-06-17   
858-910 4 SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2021-06-12   
858-910 5 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-06-17   
858-910 6 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-06-17   
858-910 7 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-06-17   
858-910 8 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-06-17   
858-910 9 SNDGCA02XSZ  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 732   2021-06-01   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.