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: 276

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-276 A Columbia MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-276 0 Columbia MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-276 1 Columbia MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-276 2 Columbia MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-276 3 Columbia MD BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2003-11-08   
443-276 4 Columbia MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-276 5 Columbia MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-276 6 Columbia MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-276 7 Columbia MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-276 8 Columbia MD BLTMMD91DS1  2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
443-276 9 Columbia MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

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