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.

Crockett, CA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
341-444 A SNJUCACL7MD  965H FRACTEL, LLC 722      
341-444 0 SNFCCAMKX9X  073H TELNYX LLC 722   2021-02-25   
341-444 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-12-05   
341-444 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-08-29   
341-444 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-08-29   
341-444 4 SNJUCACL7MD  965H FRACTEL, LLC 722   2020-01-24   
341-444 5 SNJUCACL8MD  145J TERRA NOVA TELECOM INC. 722   2024-08-13   
341-444 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-12-05   
341-444 7 SNJUCACL7MD  965H FRACTEL, LLC 722   2020-01-24   
341-444 8 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2020-10-16   
341-444 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2020-06-06   
341-900 A SNJUCACL7MD  965H FRACTEL, LLC 722      
341-900 0 SNJUCACL7MD  965H FRACTEL, LLC 722   2021-01-14   
341-900 1 SNFCCAMKX6Y  515J IP HORIZON LLC 722   2021-05-01   
341-900 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-07-16   
341-900 3 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-07-23   
341-900 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-08-08   
341-900 5 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-11-07   
341-900 6 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-11-07   
341-900 7 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2021-12-19   
341-900 8 SNFCCA21XPZ  553J WHITESKY COMMUNICATIONS, LLC 722   2021-09-16   
341-900 9   965H FRACTEL, LLC 722   2021-02-20   
510-256 A SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-256 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2005-04-16   
510-256 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2010-08-09   
510-256 2 SNVACAHZ0MD  508J CENTURYLINK COMMUNICATIONS, LLC 722   2014-03-28   
510-256 3 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2013-04-29   
510-256 4 SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2009-03-20   
510-256 5   515J IP HORIZON LLC 722   2002-10-12   
510-256 6 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2015-06-17   
510-256 7 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2013-03-25   
510-256 8 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2013-03-25   
510-256 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-08-28   
510-312 A SNJUCACL4MD  939H COMMIO, LLC 722      
510-312 0 SNJUCACL4MD  939H COMMIO, LLC 722   2023-10-09   
510-312 1 SNJUCACL4MD  939H COMMIO, LLC 722   2023-10-09   
510-312 2 SNJUCACL4MD  939H COMMIO, LLC 722   2023-10-09   
510-312 3 SNJUCACL4MD  939H COMMIO, LLC 722   2023-10-09   
510-312 4 SNJUCACL4MD  939H COMMIO, LLC 722   2023-10-09   
510-312 5 SNFCCAMKX9X  073H TELNYX LLC 722   2024-04-14   
510-312 6 OKLDCA03XKY  624H ONVOY SPECTRUM, LLC 722   2024-08-18   
510-312 7 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2024-09-15   
510-312 8 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2023-12-14   
510-312 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2023-12-14   
510-455 A OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
510-455 0 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
510-455 1 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
510-455 2 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-07-04   
510-455 3 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-02-14   
510-455 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2004-04-10   
510-455 5 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2013-03-28   
510-455 6 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
510-455 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2013-01-17   
510-455 8 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2009-12-18   
510-455 9 SNFCCA01XGX  516C AT&T CORP. 722   2011-05-16   
510-722 A SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-722 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-722 1 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-722 2 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2007-04-09   
510-722 3 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2001-07-24   
510-722 4 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2024-11-16   
510-722 5 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2011-05-15   
510-722 6 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2006-01-09   
510-722 7 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-06-15   
510-722 8 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-12-31   
510-722 9 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-08-09   
510-726 A SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722      
510-726 0 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2016-10-16   
510-726 1 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2016-10-17   
510-726 2 SNJUCACL3MD  073H TELNYX LLC 722   2017-07-21   
510-726 3 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2017-03-10   
510-726 4 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2018-10-20   
510-726 5 FRMTCAJYDS0  707H INTEGRATED PATH COMMUNICATIONS, LLC - CA 722   2018-07-13   
510-726 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2019-02-21   
510-726 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2019-02-21   
510-726 8 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2019-09-06   
510-726 9 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-12-23   
510-787 A CRCTCA02RS1  9740 PACIFIC BELL 722      
510-787 0 CRCTCA02RS1  9740 PACIFIC BELL 722      
510-787 1 CRCTCA02RS1  9740 PACIFIC BELL 722      
510-787 2 CRCTCA02RS1  9740 PACIFIC BELL 722      
510-787 3 CRCTCA02RS1  9740 PACIFIC BELL 722      
510-787 4 CRCTCA02RS1  9740 PACIFIC BELL 722      
510-787 5 SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2008-06-06   
510-787 6 CRCTCA02RS1  9740 PACIFIC BELL 722      
510-787 7 CRCTCA02RS1  9740 PACIFIC BELL 722      
510-787 8 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-12-13   
510-787 9 CRCTCA02RS1  9740 PACIFIC BELL 722      
510-937 A SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-937 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-08-06   
510-937 1   515J IP HORIZON LLC 722   2015-09-18   
510-937 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-04-23   
510-937 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-04-23   
510-937 4   515J IP HORIZON LLC 722   2016-09-14   
510-937 5 SNFCCA21XOZ  321J HD CARRIER LLC 722   2016-06-09   
510-937 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2015-12-07   
510-937 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2015-12-07   
510-937 8 SNFCCA21XOZ  321J HD CARRIER LLC 722   2016-06-09   
510-937 9 SNFCCA21XCZ  252F WIDE VOICE, LLC - CA 722   2016-06-09   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.