Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 301

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-301 A Gaithersburg MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
301-301 0 Gaithersburg MD   876D ONVOY, LLC - MD 236   2022-10-23   
301-301 1 Gaithersburg MD   876D ONVOY, LLC - MD 236   2022-10-23   
301-301 2 Gaithersburg MD   876D ONVOY, LLC - MD 236   2022-10-23   
301-301 3 Gaithersburg MD   876D ONVOY, LLC - MD 236   2022-10-23   
301-301 4 Gaithersburg MD   876D ONVOY, LLC - MD 236   2022-10-23   
301-301 5 Gaithersburg MD   876D ONVOY, LLC - MD 236   2022-10-23   
301-301 6 Gaithersburg MD   876D ONVOY, LLC - MD 236   2022-10-23   
301-301 7 Gaithersburg MD   876D ONVOY, LLC - MD 236   2022-10-23   
301-301 8 Gaithersburg MD   876D ONVOY, LLC - MD 236   2022-10-23   
301-301 9 Gaithersburg MD   876D ONVOY, LLC - MD 236   2022-10-23   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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