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: 218

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-218 A Worthington MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-218 0 Worthington MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-11-11   
443-218 2 Worthington MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
443-218 3 Worthington MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-09-04   
443-218 5 Worthington MD BLTMMDCHX7X  073H TELNYX LLC 238   2023-08-12   
443-218 6 Worthington MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-218 7 Worthington MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-11-20   
443-218 8 Worthington MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2006-08-07   
443-218 9 Worthington MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-04-30   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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