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: 973

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-973 A Berlin MD SLBRMDSBXWX  861F MCC TELEPHONY OF THE MID-ATLANTIC, LLC - MD 242      
410-973 0 Berlin MD   876D ONVOY, LLC - MD 242   2024-05-20   
410-973 1 Berlin MD   861F MCC TELEPHONY OF THE MID-ATLANTIC, LLC - MD 242   2010-08-21   
410-973 2 Berlin MD   318J COMCAST IP PHONE, LLC 242   2013-05-30   
410-973 3 Berlin MD   876D ONVOY, LLC - MD 242   2024-06-23   
410-973 4 Berlin MD   568G PEERLESS NETWORK OF MARYLAND, LLC 242   2018-03-11   
410-973 5 Berlin MD   145J TERRA NOVA TELECOM INC. 242   2025-05-07   
410-973 6 Berlin MD   876D ONVOY, LLC - MD 242   2019-03-04   
410-973 7 Berlin MD   876D ONVOY, LLC - MD 242   2019-03-04   
410-973 8 Berlin MD   145J TERRA NOVA TELECOM INC. 242   2026-01-04   
410-973 9 Berlin MD   145J TERRA NOVA TELECOM INC. 242   2024-09-13   

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

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