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: 374

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-374 A Martinez CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-374 0 Martinez CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-374 1 Martinez CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-374 2 Martinez CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-374 3 Martinez CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
925-374 4 Martinez CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
925-374 5 Martinez CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
925-374 6 Martinez CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-374 7 Martinez CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-374 8 Martinez CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-374 9 Martinez CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.