Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 498

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-498 A Catonsville MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-498 0 Catonsville MD   4773 XO MARYLAND, LLC 238      
443-498 1 Catonsville MD   4773 XO MARYLAND, LLC 238      
443-498 2 Catonsville MD   4773 XO MARYLAND, LLC 238      
443-498 3 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-03-19   
443-498 4 Catonsville MD   4773 XO MARYLAND, LLC 238      
443-498 5 Catonsville MD   4773 XO MARYLAND, LLC 238      
443-498 6 Catonsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
443-498 7 Catonsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
443-498 8 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-03-19   
443-498 9 Catonsville MD   4773 XO MARYLAND, LLC 238      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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