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.

NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX: 648

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-648 A Galena MD GALNMDGLRS0  9212 VERIZON MARYLAND, INC. 242      
410-648 0 Galena MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-648 1 Galena MD ESTNMDESMMD  228C IDT AMERICA, CORP. - MD 242   2006-05-21   
410-648 2 Galena MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2006-06-26   
410-648 3 Galena MD SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2022-05-23   
410-648 4 Galena MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2013-06-23   
410-648 5 Galena MD GALNMDGLRS0  9212 VERIZON MARYLAND, INC. 242      
410-648 6 Galena MD GALNMDGLRS0  9212 VERIZON MARYLAND, INC. 242      
410-648 7 Galena MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2006-07-31   
410-648 8 Galena MD SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242   2014-10-20   
410-648 9 Galena MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-13   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.