Local Calling Guide

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Dundalk, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
667-856 A BLTQMD01BMD  516J TON80 COMMUNICATIONS, LLC 238      
667-856 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2022-06-09   
667-856 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-04-15   
667-856 2   876D ONVOY, LLC - MD 238   2023-08-10   
667-856 3   876D ONVOY, LLC - MD 238   2023-08-10   
667-856 4   876D ONVOY, LLC - MD 238   2023-08-10   
667-856 5   876D ONVOY, LLC - MD 238   2023-08-10   
667-856 6   876D ONVOY, LLC - MD 238   2023-06-16   
667-856 7   516J TON80 COMMUNICATIONS, LLC 238   2022-05-03   
667-856 8   876D ONVOY, LLC - MD 238   2023-08-10   
667-856 9   876D ONVOY, LLC - MD 238   2023-08-10   

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

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