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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-639 A Rock Hall MD RKHLMDRHRS0  9212 VERIZON MARYLAND, INC. 242      
410-639 0 Rock Hall MD   2593 CORE COMMUNICATIONS, INC. - MD 242   2004-04-03   
410-639 2 Rock Hall MD   9212 VERIZON MARYLAND, INC. 242      
410-639 3 Rock Hall MD   876D ONVOY, LLC - MD 242   2017-04-14   
410-639 4 Rock Hall MD   228C IDT AMERICA CORP - MD 242   2006-05-21   
410-639 5 Rock Hall MD   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 242   2017-09-18   
410-639 7 Rock Hall MD   9212 VERIZON MARYLAND, INC. 242      
410-639 8 Rock Hall MD   073H TELNYX LLC 242   2017-09-13   
410-639 9 Rock Hall MD   9212 VERIZON MARYLAND, INC. 242      

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.