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: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 887

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-887 A Catonsville MD HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-887 0 Catonsville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2010-07-03   
443-887 1 Catonsville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2010-07-03   
443-887 2 Catonsville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2010-07-03   
443-887 3 Catonsville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2010-07-03   
443-887 4 Catonsville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2010-07-03   
443-887 5 Catonsville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2010-07-03   
443-887 6 Catonsville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2010-07-03   
443-887 7 Catonsville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2010-07-03   
443-887 8 Catonsville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2010-07-03   
443-887 9 Catonsville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2010-07-03   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.