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.

Dublin-San Ramon, CA

1 2 3 4 5 6 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
925-216 A CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-230 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-230 0 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-04-30   
925-230 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2007-09-07   
925-230 2 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-230 3 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2020-11-08   
925-230 4 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2020-11-08   
925-230 5 SNFCCAMKX9X  073H TELNYX LLC 722   2020-11-26   
925-230 6 OKLDCAMPDS0  4733 PAETEC COMMUNICATIONS, INC. - CA 722   2009-04-28   
925-230 7 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2020-09-21   
925-230 8 SNFCCA01XGX  516C AT&T CORP. 722   2006-06-30   
925-230 9 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2009-06-23   
925-236 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-236 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
925-236 1 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-236 2 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-236 3 SNJUCACL3MD  073H TELNYX LLC 722   2017-06-05   
925-236 4 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-236 5 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-236 6 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-236 7 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-236 8 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-236 9 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-241 A HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-241 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-04-23   
925-241 1 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-241 2 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-241 3 SNJSCA02DS2  7421 AT&T LOCAL 722   2002-09-03   
925-241 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-05-19   
925-241 5 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2010-02-21   
925-241 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-04-23   
925-241 7 FRMTCAEDDS2  7262 XO CALIFORNIA, INC. 722   2007-03-02   
925-241 8 SNJUCACL1MD  222H LOCAL ACCESS SERVICES LLC - CA 722   2016-09-15   
925-241 9 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-248 A DAVLCA13DS0  9740 PACIFIC BELL 722      
925-248 0 DAVLCA13DS0  9740 PACIFIC BELL 722      
925-248 1 DAVLCA13DS0  9740 PACIFIC BELL 722      
925-248 2 OKLDCA03XOY  318J COMCAST IP PHONE LLC 722   2010-09-27   
925-248 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-03-03   
925-248 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-03-03   
925-248 5 DAVLCA13DS0  9740 PACIFIC BELL 722      
925-248 6 PLTNCAAYCM1  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-06-25   
925-248 7 PLTNCAAYCM1  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-06-25   
925-248 8 OKLDCA03XOY  318J COMCAST IP PHONE LLC 722   2016-11-06   
925-248 9 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-04-27   
925-307 A OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
925-307 0 PLTNCAAYCM1  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-06-26   
925-307 1 OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
925-307 2 HYWRCAMCDS0  7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722   2021-05-04   
925-307 3 PLTNCAAYCM1  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-06-25   

1 2 3 4 5 6 >>

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.