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: 431

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-431 A Severna Park MD SVPKMDSPDS0  9212 VERIZON MARYLAND, INC. 238      
410-431 0 Severna Park MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-28   
410-431 1 Severna Park MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2015-12-06   
410-431 2 Severna Park MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
410-431 3 Severna Park MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
410-431 4 Severna Park MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
410-431 5 Severna Park MD SVPKMDSPDS0  9212 VERIZON MARYLAND, INC. 238      
410-431 6 Severna Park MD SVPKMDSPDS0  9212 VERIZON MARYLAND, INC. 238      
410-431 7 Severna Park MD SVPKMDSPDS0  9212 VERIZON MARYLAND, INC. 238      
410-431 8 Severna Park MD SVPKMDSPDS0  9212 VERIZON MARYLAND, INC. 238      
410-431 9 Severna Park MD SVPKMDSPDS0  9212 VERIZON MARYLAND, INC. 238      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.