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.

NPA: 925 [Rate centres in NPA 925] [Dial plan for NPA 925]

NXX: 558

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-558 A Dublin-San Ramon CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-558 0 Dublin-San Ramon CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2006-05-21   
925-558 1 Dublin-San Ramon CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-558 2 Dublin-San Ramon CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-558 3 Dublin-San Ramon CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-07-22   
925-558 4 Dublin-San Ramon CA FRMTCAEDDS2  7262 XO CALIFORNIA, INC. 722   2005-06-05   
925-558 5 Dublin-San Ramon CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2013-10-20   
925-558 6 Dublin-San Ramon CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-07-22   
925-558 7 Dublin-San Ramon CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2004-09-17   
925-558 8 Dublin-San Ramon CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2012-12-31   
925-558 9 Dublin-San Ramon CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2012-12-31   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.