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.

Cecilton, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-275 A CCTNMDCLRS0  9212 VERIZON MARYLAND, INC. 242      
410-275 0 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-13   
410-275 1 CCTNMDCLRS0  9212 VERIZON MARYLAND, INC. 242      
410-275 2 CCTNMDCLRS0  9212 VERIZON MARYLAND, INC. 242      
410-275 3 SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
410-275 4 SLBRMDSBXLX  318J COMCAST IP PHONE LLC 242   2014-05-12   
410-275 5 SLBRMDFSDS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-275 6 SLBRMDSB8MD  2589 US LEC OF MARYLAND, INC. 242   2014-11-08   
410-275 7 SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242   2014-10-20   
410-275 8 CCTNMDCLRS0  9212 VERIZON MARYLAND, INC. 242      
410-275 9 CCTNMDCLRS0  9212 VERIZON MARYLAND, INC. 242      
667-245 A ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-245 0   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-08-03   
667-245 1   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-08-03   
667-245 2   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-08-03   
667-245 3 ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-03-28   
667-245 4 ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-03-28   
667-245 5 SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-07-31   
667-245 6 ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-03-28   
667-245 7 ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-03-22   
667-245 8 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
667-245 9 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
667-302 A SLBRMDSBWMD  073H TELNYX LLC 242   2021-04-02   
667-302 0 SLBRMD902MD  073H TELNYX LLC 242   2021-04-02   
667-302 2 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-04-03   
667-302 3 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-04-03   
667-302 4 SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2021-05-27   
667-302 5 SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2022-01-22   
667-302 6   318J COMCAST IP PHONE LLC 242   2022-07-05   
667-302 7 SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2022-01-22   

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.