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.

Fremont-Newark: Oliver DA, CA

1 2 3 4 5 6 7 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
341-201 A SNJUCACL3MD  073H TELNYX LLC 722   2021-02-07   
341-201 0 SNJUCACL3MD  073H TELNYX LLC 722   2021-02-07   
341-201 2   649C ONVOY, LLC - CA 722   2021-02-18   
341-201 3   649C ONVOY, LLC - CA 722   2021-02-18   
341-201 4   649C ONVOY, LLC - CA 722   2021-02-18   
341-201 5   649C ONVOY, LLC - CA 722   2021-02-18   
341-201 6   649C ONVOY, LLC - CA 722   2021-02-18   
510-212 A SNFCCA21XEZ  6630 USA MOBILITY WIRELESS, INC. 722      
510-218 A SNFCCA21XEZ  6630 USA MOBILITY WIRELESS, INC. 722      
510-226 A FRMTCA12DS0  9740 PACIFIC BELL 722      
510-249 A FRMTCA12DS0  9740 PACIFIC BELL 722      
510-252 A FRMTCA12DS0  9740 PACIFIC BELL 722      
510-257 A SNJSCA02DS4  7145 TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO 722      
510-257 0 SNJSCA02DS4  7145 TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO 722      
510-257 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2007-09-07   
510-257 2 SNFCCAMMDSA  4129 O1 COMMUNICATIONS, INC. - CA 722   2003-10-12   
510-257 3 SNFCCAMMDSA  4129 O1 COMMUNICATIONS, INC. - CA 722   2003-10-12   
510-257 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2004-11-29   
510-257 5 FRMTCAEDDS2  7262 XO CALIFORNIA, INC. 722   2005-09-15   
510-257 6 FRMTCAEDDS2  7262 XO CALIFORNIA, INC. 722   2005-09-15   
510-257 7 FRMTCAEDDS0  7262 XO CALIFORNIA, INC. 722   2005-09-15   
510-257 8 FRMTCAEDDS0  7262 XO CALIFORNIA, INC. 722   2005-09-15   
510-257 9 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2014-09-25   
510-270 A HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-270 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-12-05   
510-270 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2010-11-30   
510-270 2 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-10-13   
510-270 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2010-03-02   
510-270 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-03-27   
510-270 5 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-10-13   
510-270 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2011-05-02   
510-270 7 SNFECAEJDS2  3662 PACIFIC CENTREX SERVICES, INC. - CA 722   2006-12-01   
510-270 8 SNFCCA01XGX  516C AT&T CORP. 722   2006-06-30   
510-270 9 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-279 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
510-279 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-279 1 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
510-279 2 SNJSCAYBGT0  7453 U.S. TELEPACIFIC CORP. - CA 722      
510-279 3 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-01-07   
510-279 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2003-03-04   
510-279 5 SNJSCAYBGT0  7453 U.S. TELEPACIFIC CORP. - CA 722      
510-279 6 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2021-01-08   
510-279 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-279 8 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-06-23   
510-279 9 SNJUCA10DS0  8322 MPOWER COMMUNICATIONS CORP - CA 722   2001-09-03   
510-319 A SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-319 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-02-29   
510-319 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-02-29   
510-319 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-04-23   
510-319 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-04-23   

1 2 3 4 5 6 7 >>

Last updated: Sun, 28 Feb 2021 19:06:05 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.