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: 634

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-634 A Ridgely MD HLBOMDTKRS0  9212 VERIZON MARYLAND, INC. 242      
410-634 0 Ridgely MD SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2023-09-02   
410-634 1 Ridgely MD HLBOMDTKRS0  9212 VERIZON MARYLAND, INC. 242      
410-634 2 Ridgely MD HLBOMDTKRS0  9212 VERIZON MARYLAND, INC. 242      
410-634 3 Ridgely MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-634 4 Ridgely MD ESTNMDESMMD  228C IDT AMERICA, CORP. - MD 242   2012-06-01   
410-634 5 Ridgely MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
410-634 6 Ridgely MD SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
410-634 7 Ridgely MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-14   
410-634 8 Ridgely MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2006-07-31   
410-634 9 Ridgely MD HLBOMDTKRS0  9212 VERIZON MARYLAND, INC. 242   2003-12-31   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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