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: 928

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-928 A Millington MD MGTNMDMLRS0  9212 VERIZON MARYLAND, INC. 242      
410-928 0 Millington MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-928 1 Millington MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2014-01-04   
410-928 2 Millington MD ESTNMDESMMD  228C IDT AMERICA, CORP. - MD 242   2006-05-21   
410-928 3 Millington MD MGTNMDMLRS0  9212 VERIZON MARYLAND, INC. 242      
410-928 4 Millington MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2008-04-03   
410-928 5 Millington MD MGTNMDMLRS0  9212 VERIZON MARYLAND, INC. 242      
410-928 6 Millington MD MGTNMDMLRS0  9212 VERIZON MARYLAND, INC. 242   2004-11-16   
410-928 7 Millington MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2004-06-12   
410-928 8 Millington MD ESTNMDES5MD  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
410-928 9 Millington MD SLBRMDSBX6Y  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 242   2011-01-29   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.