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: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
810-640 A Clio-Mount Morris MI FLNTMINEDS0  9323 MICHIGAN BELL TEL CO 340      
810-640 0 Clio-Mount Morris MI FLNTMINEDS0  9323 MICHIGAN BELL TEL CO 340      
810-640 1 Clio-Mount Morris MI FLNTMINEDS0  9323 MICHIGAN BELL TEL CO 340      
810-640 2 Clio-Mount Morris MI FLNTMINEDS0  9323 MICHIGAN BELL TEL CO 340      
810-640 3 Clio-Mount Morris MI FLNTMINEDS0  9323 MICHIGAN BELL TEL CO 340      
810-640 4 Clio-Mount Morris MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2022-10-13   
810-640 5 Clio-Mount Morris MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2011-05-30   
810-640 6 Clio-Mount Morris MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2011-04-11   
810-640 7 Clio-Mount Morris MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2008-04-26   
810-640 8 Clio-Mount Morris MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2007-07-05   
810-640 9 Clio-Mount Morris MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2020-08-30   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.