Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Ridgely, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-634 A HLBOMDTKRS0  9212 VERIZON MARYLAND, INC. 242      
410-634 0 SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2023-09-02   
410-634 1 HLBOMDTKRS0  9212 VERIZON MARYLAND, INC. 242      
410-634 2 HLBOMDTKRS0  9212 VERIZON MARYLAND, INC. 242      
410-634 3   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-634 4 ESTNMDESMMD  228C IDT AMERICA, CORP. - MD 242   2012-06-01   
410-634 5   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
410-634 6 SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
410-634 7 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-14   
410-634 8 SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2006-07-31   
410-634 9 HLBOMDTKRS0  9212 VERIZON MARYLAND, INC. 242   2003-12-31   
667-241 A ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-241 0   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-08-03   
667-241 1   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-08-03   
667-241 2   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-08-03   
667-241 4 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-03-05   
667-241 5 SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
667-241 6 SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
667-241 7 SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
667-241 8 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-10   
667-241 9 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-10   
667-348 A SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-348 2 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-10-31   
667-348 3 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-12-20   
667-348 4 SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2022-09-15   
667-348 7 SLBRMD90BMD  516J TON80 COMMUNICATIONS, LLC 242   2022-04-10   
667-348 8 SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2024-04-27   

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

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