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.

Mill Valley, CA

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
415-879 6 OKLECAZV1MD  5562 METROPCS, INC. 722   2010-09-04   
415-879 7 OKLECAZV1MD  5562 METROPCS, INC. 722   2011-02-24   
415-879 8 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-08-23   
415-879 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-08-23   
415-888 A OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
415-888 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2012-10-11   
415-888 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2010-11-28   
415-888 2 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
415-888 3 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
415-888 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2010-12-16   
415-888 5 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2010-12-16   
415-888 6 SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2010-05-10   
415-888 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2010-12-16   
415-888 8 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2007-05-03   
415-888 9 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2015-12-21   
415-968 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
415-968 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-08-23   
415-968 1 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-08-23   
415-968 2 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-05-28   
415-968 3 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2008-07-24   
415-968 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-11-04   
415-968 5 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-02-18   
415-968 6 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-02-18   
415-968 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2013-09-20   
415-968 8 SNFCCAMKX5Y  506J TWILIO INTERNATIONAL, INC. 722   2014-11-13   
415-968 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-08-31   
628-215 A SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
628-215 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-11-14   
628-215 1 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-11-14   
628-215 2 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-11-14   
628-215 3 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-11-14   
628-215 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-11-15   
628-215 5 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-11-15   
628-215 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-11-15   
628-215 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-11-15   
628-215 8 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-11-15   
628-215 9 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2016-11-15   
628-245 A SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-245 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-08-13   
628-245 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-08-29   
628-245 2 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-10-10   
628-245 3 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-10-10   
628-245 4 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-10-10   
628-245 5 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-10-10   
628-245 6 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2016-09-14   
628-245 7 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-10-10   
628-245 8   515J IP HORIZON LLC 722   2016-09-11   
628-245 9 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2016-09-19   
628-257 A SNFCCAMM8MD  973E RACE TELECOMMUNICATIONS, INC. - CA 722      
628-257 0 SNFCCAMM8MD  973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-12-25   
628-257 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2017-05-18   
628-257 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2017-05-18   
628-257 3 SNJUCACL3MD  073H TELNYX LLC 722   2017-06-05   
628-257 4 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2017-06-19   
628-257 5 FRMTCAJYDS0  707H INTEGRATED PATH COMMUNICATIONS, LLC - CA 722   2018-07-13   
628-257 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-09-22   
628-257 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-12-23   
628-257 8 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-09-22   
628-257 9 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-12-23   
628-288 A SNJUCACL7MD  965H FRACTEL, LLC 722      
628-288 0 OKLECAZV1MD  5562 METROPCS, INC. 722   2020-07-26   
628-288 1 OKLECAZV1MD  5562 METROPCS, INC. 722   2020-07-26   
628-288 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2019-07-28   
628-288 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-08-17   
628-288 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-08-17   
628-288 5 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-19   
628-288 6 SNJUCACL7MD  965H FRACTEL, LLC 722   2019-07-16   
628-288 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-03-04   
628-288 8 SNJUCACL7MD  965H FRACTEL, LLC 722   2019-05-14   
628-288 9 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-09-13   
628-291 A CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
628-291 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2024-11-10   
628-291 1 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2024-11-10   
628-291 2   624H ONVOY SPECTRUM, LLC 722   2025-01-30   
628-291 8 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2024-11-19   
628-291 9 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2023-09-18   
628-477 A SNJUCACL7MD  965H FRACTEL, LLC 722      
628-477 0 SNFCCAMKX6Y  515J IP HORIZON LLC 722   2021-05-01   
628-477 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-08-09   
628-477 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-08-09   
628-477 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-08-09   
628-477 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-08-09   
628-477 5 OKLDCAMP1MD  4733 PAETEC COMMUNICATIONS, INC. - CA 722   2021-07-16   
628-477 6 SNFCCA21XPZ  553J WHITESKY COMMUNICATIONS, LLC 722   2021-09-16   
628-477 7 SNJUCACL7MD  965H FRACTEL, LLC 722   2021-04-09   
628-477 8 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-08-11   
628-477 9 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2021-11-08   
628-677 A SNJUCACL7MD  965H FRACTEL, LLC 722      
628-677 0 OKLECAZV1MD  5562 METROPCS, INC. 722   2022-05-06   
628-677 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-08-11   
628-677 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-08-11   
628-677 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-10-03   
628-677 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-10-03   
628-677 5 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-10-03   
628-677 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-10-03   
628-677 7 SNJUCACL7MD  965H FRACTEL, LLC 722   2021-09-13   
628-677 8 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-08-11   
628-677 9 SNJUCACL4MD  939H COMMIO, LLC 722   2022-11-10   

<< 1 2

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.