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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-569 A Annapolis MD BLTMMDSNRS0  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-569 0 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-12-13   
443-569 1 Annapolis MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-06-02   
443-569 2 Annapolis MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-08-01   
443-569 3 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-05-06   
443-569 4 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-569 5 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-05-06   
443-569 6 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-05-06   
443-569 7 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-05-06   
443-569 8 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-05-06   
443-569 9 Annapolis MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-03-04   

Last updated: Wed, 05 Feb 2020 02:15:44 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.