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: 715

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-715 A North East MD BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-715 0 North East MD BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-715 2 North East MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2016-10-19   
443-715 3 North East MD BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-715 4 North East MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-04-29   
443-715 5 North East MD   145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-715 6 North East MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-04-29   
443-715 7 North East MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-16   
443-715 8 North East MD BLTMMDCHXMX  506J TWILIO INTERNATIONAL, INC. 238   2020-12-26   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.