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.

Switch: BLTNCAADPS2

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
951-905 5 Riverside CA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2001-01-23   
951-905 6 Riverside CA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2005-06-18   
951-934 6 Mira Loma CA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2007-03-25   
951-992 5 Moreno CA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2005-11-28   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.