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.

Clayton, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
517-445 A CYTNMIXIPS0  0672 COMMUNICATIONS CORP. OF MI 340      
517-445 0 CYTNMIXIPS0  0672 COMMUNICATIONS CORP. OF MI 340      
517-445 1 CYTNMIXIPS0  0672 COMMUNICATIONS CORP. OF MI 340      
517-445 2 CYTNMIXIPS0  0672 COMMUNICATIONS CORP. OF MI 340      
517-445 3 PTBGMIAKDS0  558A DEERFIELD FARMERS' TELEPHONE COMPANY - MI 340      
517-445 4 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
517-445 5 SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340      
517-445 6 SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-445 7 SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-445 8 CYTNMIXIPS0  0672 COMMUNICATIONS CORP. OF MI 340      
517-445 9 CYTNMIXIPS0  0672 COMMUNICATIONS CORP. OF MI 340      
517-510 A SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-510 2 SFLDMITODS2  543C ONVOY, LLCV - MI 340      
517-510 8   624H ONVOY SPECTRUM, LLC 340      
517-510 9 DTRTMIBAUMD  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.