Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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
443-487 A Westminster MD BLTMMDCHXZY  8864 BROADWING COMMUNICATIONS. LLC - MD 238      
443-487 0 Westminster MD   8864 BROADWING COMMUNICATIONS. LLC - MD 238      
443-487 1 Westminster MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-03-03   
443-487 2 Westminster MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-04-04   
443-487 3 Westminster MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-02-02   
443-487 4 Westminster MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-05-05   
443-487 5 Westminster MD   2589 US LEC OF MARYLAND, INC. 238   2002-11-16   
443-487 6 Westminster MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-09-03   
443-487 7 Westminster MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-09-21   
443-487 8 Westminster MD   4773 XO MARYLAND, LLC 238   2002-11-25   
443-487 9 Westminster MD   8864 BROADWING COMMUNICATIONS. LLC - MD 238      

Last updated: Wed, 10 Apr 2019 01:22:05 UTC

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