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: 781

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-781 A Ellicott City MD SYVLMDSKDS0  9212 VERIZON MARYLAND, INC. 238      
410-781 0 Ellicott City MD SYVLMDSKDS0  9212 VERIZON MARYLAND, INC. 238      
410-781 1 Ellicott City MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-10   
410-781 2 Ellicott City MD BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2006-05-04   
410-781 3 Ellicott City MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-04-13   
410-781 4 Ellicott City MD SYVLMDSKDS0  9212 VERIZON MARYLAND, INC. 238      
410-781 5 Ellicott City MD BLTQMD012MD  964H BARR TELL USA, INC. 238   2016-12-17   
410-781 6 Ellicott City MD SYVLMDSKDS0  9212 VERIZON MARYLAND, INC. 238      
410-781 7 Ellicott City MD SYVLMDSKDS0  9212 VERIZON MARYLAND, INC. 238      
410-781 8 Ellicott City MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-04-16   
410-781 9 Ellicott City MD   145J TERRA NOVA TELECOM INC. 238   2024-02-15   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.