Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Federalsburg, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-754 A FDBGMDFERS0  9212 VERIZON MARYLAND, INC. 242      
410-754 0   9212 VERIZON MARYLAND, INC. 242      
410-754 1   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-754 2   9212 VERIZON MARYLAND, INC. 242      
410-754 3   9212 VERIZON MARYLAND, INC. 242      
410-754 4   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
410-754 5   9212 VERIZON MARYLAND, INC. 242      
410-754 6   9212 VERIZON MARYLAND, INC. 242      
410-754 7   9212 VERIZON MARYLAND, INC. 242      
410-754 8   9212 VERIZON MARYLAND, INC. 242      
410-754 9   9212 VERIZON MARYLAND, INC. 242      
443-434 A SLBRMDSBWMD  073H TELNYX LLC 242      
443-434 0   876D ONVOY, LLC - MD 242   2019-03-04   
443-434 1   073H TELNYX LLC 242   2017-09-13   
443-434 2   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-434 3   318J COMCAST IP PHONE LLC 242   2006-07-31   
443-434 4   876D ONVOY, LLC - MD 242   2017-04-13   
443-434 5   318J COMCAST IP PHONE LLC 242   2015-09-21   
443-434 6   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242   2012-07-13   
443-434 7   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-434 8   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-434 9   876D ONVOY, LLC - MD 242   2019-03-04   
667-347 A SLBRMDSBX1Y  566J RADIANTIQ LLC 242   2021-05-17   
667-347 0   876D ONVOY, LLC - MD 242   2021-05-18   
667-347 1   876D ONVOY, LLC - MD 242   2021-05-18   
667-347 2   876D ONVOY, LLC - MD 242   2021-07-12   
667-347 3   624H ONVOY SPECTRUM, LLC 242   2021-05-27   
667-347 4   624H ONVOY SPECTRUM, LLC 242   2022-03-13   
667-347 5   516J TON80 COMMUNICATIONS LLC 242   2022-03-31   
667-347 6   566J RADIANTIQ LLC 242   2021-05-17   
667-347 7   876D ONVOY, LLC - MD 242   2021-05-21   
667-347 8   876D ONVOY, LLC - MD 242   2021-05-21   
667-347 9   490J DISH WIRELESS, LLC 242   2022-04-01   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.