Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 427

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-427 A West River MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-427 0 West River MD   490J DISH WIRELESS, LLC 238   2023-06-30   
667-427 1 West River MD   876D ONVOY, LLC - MD 238   2023-08-10   
667-427 2 West River MD   876D ONVOY, LLC - MD 238   2023-08-10   
667-427 3 West River MD   516J TON80 COMMUNICATIONS, LLC 238   2022-03-21   
667-427 4 West River MD   624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-427 5 West River MD   876D ONVOY, LLC - MD 238   2023-08-10   
667-427 6 West River MD   876D ONVOY, LLC - MD 238   2021-05-22   
667-427 7 West River MD   624H ONVOY SPECTRUM, LLC 238   2022-01-28   
667-427 8 West River MD   624H ONVOY SPECTRUM, LLC 238   2022-01-28   
667-427 9 West River MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2022-01-28   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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