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: 230

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
947-230 A Royal Oak MI LIVNMIUX8MD  5562 METROPCS, INC. 340      
947-230 0 Royal Oak MI   543C ONVOY, LLCV - MI 340   2023-07-06   
947-230 1 Royal Oak MI   197D VONAGE AMERICA LLC 340   2021-06-06   
947-230 2 Royal Oak MI   624H ONVOY SPECTRUM, LLC 340   2021-06-15   
947-230 3 Royal Oak MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2024-11-30   
947-230 4 Royal Oak MI   543C ONVOY, LLCV - MI 340   2023-07-06   
947-230 5 Royal Oak MI   197D VONAGE AMERICA LLC 340   2021-06-06   
947-230 6 Royal Oak MI   5562 METROPCS, INC. 340   2021-11-11   
947-230 7 Royal Oak MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2023-01-03   
947-230 8 Royal Oak MI   543C ONVOY, LLCV - MI 340   2023-07-06   
947-230 9 Royal Oak MI   543C ONVOY, LLCV - MI 340   2023-07-06   

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

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