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: 319

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-319 A Baltimore MD BLTMMDHMDS0  9212 VERIZON MARYLAND, INC. 238      
410-319 0 Baltimore MD BLTMMDCHAMD  1958 ATX TELECOMMUNICATIONS SERVICES, LTD. 238   2004-02-15   
410-319 1 Baltimore MD BLTMMDHMDS0  9212 VERIZON MARYLAND, INC. 238      
410-319 2 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2019-02-02   
410-319 3 Baltimore MD BLTMMDHMDS0  9212 VERIZON MARYLAND, INC. 238      
410-319 4 Baltimore MD   145J TERRA NOVA TELECOM INC. 238   2021-09-24   
410-319 5 Baltimore MD BLTMMDHMDS0  9212 VERIZON MARYLAND, INC. 238      
410-319 6 Baltimore MD BLTMMDHMDS0  9212 VERIZON MARYLAND, INC. 238      
410-319 7 Baltimore MD BLTMMDHMDS0  9212 VERIZON MARYLAND, INC. 238      
410-319 8 Baltimore MD BLTMMDHMDS0  9212 VERIZON MARYLAND, INC. 238      
410-319 9 Baltimore MD BLTMMDHMDS0  9212 VERIZON MARYLAND, INC. 238      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.