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]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-999 7 Elkridge MD   876D ONVOY, LLC - MD 238   2015-05-21   
667-999 8 Elkridge MD   876D ONVOY, LLC - MD 238   2015-05-21   
667-999 9 Elkridge MD   876D ONVOY, LLC - MD 238   2015-05-21   

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

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