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: 833

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-833 A Arbutus MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-833 0 Arbutus MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-833 1 Arbutus MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-833 2 Arbutus MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-833 3 Arbutus MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-833 4 Arbutus MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-833 5 Arbutus MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-833 6 Arbutus MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-833 7 Arbutus MD BLTMMDCHFMD  5562 METROPCS, INC. 238      
443-833 8 Arbutus MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-833 9 Arbutus MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.