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: 771

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
810-771 A Grand Blanc MI SFLDMIDNDS5  9714 GRID 4 COMMUNICATIONS, INC. - MI 340      
810-771 0 Grand Blanc MI SFLDMIDNDS5  9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-11-17   
810-771 1 Grand Blanc MI FETPMIAU2MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 340   2007-02-25   
810-771 2 Grand Blanc MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2007-05-18   
810-771 3 Grand Blanc MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2010-02-22   
810-771 4 Grand Blanc MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2008-04-14   
810-771 5 Grand Blanc MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2011-07-09   
810-771 6 Grand Blanc MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2012-07-13   
810-771 7 Grand Blanc MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2007-07-23   
810-771 8 Grand Blanc MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2009-03-07   
810-771 9 Grand Blanc MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2013-01-31   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.