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: 541

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-541 A Severna Park MD SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      
410-541 0 Severna Park MD   9212 VERIZON MARYLAND, INC. 238      
410-541 1 Severna Park MD   876D ONVOY, LLC - MD 238   2016-03-03   
410-541 2 Severna Park MD   9212 VERIZON MARYLAND, INC. 238      
410-541 3 Severna Park MD   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-04-30   
410-541 4 Severna Park MD   876D ONVOY, LLC - MD 238   2021-03-04   
410-541 5 Severna Park MD   876D ONVOY, LLC - MD 238   2021-03-04   
410-541 6 Severna Park MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
410-541 7 Severna Park MD   876D ONVOY, LLC - MD 238   2021-03-04   
410-541 8 Severna Park MD   876D ONVOY, LLC - MD 238   2024-12-14   
410-541 9 Severna Park MD   281E YMAX COMMUNICATIONS CORP. - MD 238   2009-02-12   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.