Local Calling Guide

Area code/prefix search

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Jarrettsville, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
667-576 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-11-24   
667-576 5 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-576 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-05-22   
667-576 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-02-03   
667-576 8 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-02-03   
667-576 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-01-03   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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