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: 707 [Rate centres in NPA 707] [Dial plan for NPA 707]

NXX: 439

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
707-439 A Fairfield-Suisun CA SUISCA11DS0  9740 PACIFIC BELL 722      
707-439 0 Fairfield-Suisun CA SUISCA11DS0  9740 PACIFIC BELL 722      
707-439 1 Fairfield-Suisun CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
707-439 2 Fairfield-Suisun CA SNRTCAHFDS0  433E SONIC TELECOM, LLC - CA 722      
707-439 3 Fairfield-Suisun CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
707-439 4 Fairfield-Suisun CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
707-439 5 Fairfield-Suisun CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
707-439 6 Fairfield-Suisun CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
707-439 7 Fairfield-Suisun CA SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
707-439 8 Fairfield-Suisun CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
707-439 9 Fairfield-Suisun CA SUISCA11DS0  9740 PACIFIC BELL 722      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.