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: 810 [Rate centres in NPA 810] [Dial plan for NPA 810]

NXX: 603

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
810-603 A Grand Blanc MI GRBLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
810-603 0 Grand Blanc MI GRBLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
810-603 1 Grand Blanc MI GRBLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
810-603 2 Grand Blanc MI GRBLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
810-603 3 Grand Blanc MI GRBLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
810-603 4 Grand Blanc MI GRBLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
810-603 5 Grand Blanc MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340      
810-603 6 Grand Blanc MI GRBLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
810-603 7 Grand Blanc MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
810-603 8 Grand Blanc MI GRBLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      
810-603 9 Grand Blanc MI GRBLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.