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: 517 [Rate centres in NPA 517] [Dial plan for NPA 517]

NXX: 537

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-537 A Howell MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-537 0 Howell MI SFLDMIMK5MD  939H COMMIO, LLC 340      
517-537 1 Howell MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-537 2 Howell MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-537 3 Howell MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-537 4 Howell MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-537 5 Howell MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-537 6 Howell MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-537 7 Howell MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-537 8 Howell MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-537 9 Howell MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.