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: 947 [Rate centres in NPA 947] [Dial plan for NPA 947]

NXX: 376

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
947-376 A Troy MI SFLDMIMKBMD  516J TON80 COMMUNICATIONS, LLC 340      
947-376 0 Troy MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2021-05-31   
947-376 1 Troy MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2021-05-31   
947-376 2 Troy MI   543C ONVOY, LLCV - MI 340   2021-08-01   
947-376 3 Troy MI   624H ONVOY SPECTRUM, LLC 340   2021-06-17   
947-376 4 Troy MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-05-24   
947-376 5 Troy MI   197D VONAGE AMERICA LLC 340   2021-07-17   
947-376 6 Troy MI   543C ONVOY, LLCV - MI 340   2021-08-01   
947-376 7 Troy MI   516J TON80 COMMUNICATIONS, LLC 340   2021-05-30   
947-376 8 Troy MI   543C ONVOY, LLCV - MI 340   2021-08-01   
947-376 9 Troy MI   543C ONVOY, LLCV - MI 340   2021-08-01   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.