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: 713

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-713 A Glen Burnie MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-713 0 Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-01-31   
443-713 1 Glen Burnie MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2012-11-10   
443-713 2 Glen Burnie MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2012-11-10   
443-713 3 Glen Burnie MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2012-11-10   
443-713 4 Glen Burnie MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2013-01-04   
443-713 5 Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-07-14   
443-713 6 Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-01-31   
443-713 7 Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-09-21   
443-713 8 Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-09-21   
443-713 9 Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-09-21   

Last updated: Wed, 07 Feb 2024 04:12:25 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.