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: 471

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-471 A Pikesville MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-471 0 Pikesville MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-471 1 Pikesville MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-471 2 Pikesville MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-471 3 Pikesville MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-471 4 Pikesville MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-471 5 Pikesville MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-471 6 Pikesville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-471 7 Pikesville MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-471 8 Pikesville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-471 9 Pikesville MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.