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: 556

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-556 A Church Hill MD CHRTMDCHDS0  9212 VERIZON MARYLAND, INC. 242      
410-556 0 Church Hill MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-556 2 Church Hill MD ESTNMDESMMD  228C IDT AMERICA, CORP. - MD 242   2006-05-06   
410-556 5 Church Hill MD SLBRMD906MD  145J TERRA NOVA TELECOM INC. 242   2024-02-14   
410-556 6 Church Hill MD CHRTMDCHDS0  9212 VERIZON MARYLAND, INC. 242      
410-556 7 Church Hill MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-13   
410-556 8 Church Hill MD SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
410-556 9 Church Hill MD CHRTMDCHDS0  9212 VERIZON MARYLAND, INC. 242      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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