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: 689

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
810-689 A Port Huron MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
810-689 0 Port Huron MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2009-09-29   
810-689 1 Port Huron MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-07-09   
810-689 2 Port Huron MI SFLDMIMK9MD  145J TERRA NOVA TELECOM INC. 340   2022-11-10   
810-689 3 Port Huron MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2009-01-26   
810-689 4 Port Huron MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2009-03-07   
810-689 5 Port Huron MI DTRTMIBHMMD  8685 US XCHANGE OF MICHIGAN LLC DBA CHOICE ONE COMM MI 340   2009-11-13   
810-689 6 Port Huron MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2009-08-18   
810-689 7 Port Huron MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2009-09-29   
810-689 8 Port Huron MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-01-30   
810-689 9 Port Huron MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2010-07-02   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.