Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX: 410

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-410 A Baltimore MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
410-410 0 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 1 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 2 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 3 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 4 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 5 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 6 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 7 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 8 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 9 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2023-07-21   

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

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