Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 947 [Rate centres in NPA 947] [Dial plan for NPA 947]

NXX: 237

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
947-237 A Birmingham MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
947-237 0 Birmingham MI DTRTMIVWDMD  624H ONVOY SPECTRUM, LLC 340   2022-03-06   
947-237 1 Birmingham MI SFLDMIMK3MD  197D VONAGE AMERICA LLC 340   2021-05-29   
947-237 2 Birmingham MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2021-01-07   
947-237 3 Birmingham MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-01-08   
947-237 4 Birmingham MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-01-08   
947-237 5 Birmingham MI SFLDMIMK5MD  939H COMMIO, LLC 340   2021-10-11   
947-237 6 Birmingham MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-01-08   
947-237 7 Birmingham MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-01-08   
947-237 8 Birmingham MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-01-08   
947-237 9 Birmingham MI SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2021-01-08   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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