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.

Healdsburg, CA

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
369-213 A OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
369-213 0   624H ONVOY SPECTRUM, LLC 722   2025-01-30   
369-213 1   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-03-10   
369-213 2   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-03-10   
369-213 3 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-12-26   
369-213 4 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2024-11-02   
369-213 5 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2024-09-06   
369-213 6 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-07-15   
369-213 7 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2024-06-14   
369-213 8 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2023-12-22   
369-213 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2023-12-22   
369-238 A   649C ONVOY, LLC - CA 722   2026-02-01   
369-238 0   649C ONVOY, LLC - CA 722   2026-02-01   
369-238 8   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2026-03-06   
707-385 A SNTDCABLPS0  7174 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 722      
707-385 0 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-12-17   
707-385 1 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
707-385 2 SNTDCABLPS0  7174 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 722      
707-385 3 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2022-11-17   
707-385 4 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2020-02-21   
707-385 5 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2019-09-06   
707-385 6 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-12-25   
707-385 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2009-12-18   
707-385 8 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-05-19   
707-385 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-09-19   
707-395 A SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
707-395 0 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
707-395 1   829J PAETEC ITEL, LLC 722   2016-11-25   
707-395 2 SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
707-395 3 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2005-09-09   
707-395 4 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2007-04-09   
707-395 5 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2021-01-08   
707-395 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2013-01-06   
707-395 7 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-06-24   
707-395 8 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-06-14   
707-395 9 SNJUCACL3MD  073H TELNYX LLC 722   2017-08-04   
707-431 A HLBGCA11DS0  9740 PACIFIC BELL 722      
707-433 A HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 A HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 0 HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 1   145J TERRA NOVA TELECOM INC. 722   2021-01-07   
707-473 2 HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 3 HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 4 HLBGCA11DS0  9740 PACIFIC BELL 722      
707-473 5 SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2006-05-15   
707-473 6 SNFCCAMKX6Y  515J IP HORIZON LLC 722   2021-05-01   
707-473 7 SNVACAHZ0MD  508J CENTURYLINK COMMUNICATIONS, LLC 722   2014-03-28   
707-473 8 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2010-09-26   
707-473 9 HLBGCA11DS0  9740 PACIFIC BELL 722      
707-723 A SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2024-01-21   

1 2 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.