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: 473

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
707-473 A Healdsburg CA HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 0 Healdsburg CA HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 1 Healdsburg CA   145J TERRA NOVA TELECOM INC. 722   2021-01-07   
707-473 2 Healdsburg CA HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 3 Healdsburg CA HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 4 Healdsburg CA HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 5 Healdsburg CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2006-05-15   
707-473 6 Healdsburg CA SNFCCAMKX6Y  515J IP HORIZON LLC 722   2021-05-01   
707-473 7 Healdsburg CA SNVACAHZ0MD  508J CENTURYLINK COMMUNICATIONS, LLC 722   2014-03-28   
707-473 8 Healdsburg CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2010-09-26   
707-473 9 Healdsburg CA HLBGCA11DS0  9740 PACIFIC BELL 722      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.