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: 645

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
810-645 A Port Sanilac MI   829J PAETEC ITEL, LLC 340      
810-645 2 Port Sanilac MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
810-645 3 Port Sanilac MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
810-645 4 Port Sanilac MI   829J PAETEC ITEL, LLC 340      
810-645 5 Port Sanilac MI   829J PAETEC ITEL, LLC 340      
810-645 6 Port Sanilac MI DTRTMIVWDMD  624H ONVOY SPECTRUM, LLC 340      
810-645 7 Port Sanilac MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
810-645 8 Port Sanilac MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
810-645 9 Port Sanilac MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.