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: 212

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-212 A Sparks-Glencoe MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-212 1 Sparks-Glencoe MD   829J PAETEC ITEL, LLC 238   2003-03-29   
443-212 3 Sparks-Glencoe MD   876D ONVOY, LLC - MD 238   2021-03-04   
443-212 4 Sparks-Glencoe MD   829J PAETEC ITEL, LLC 238   2004-09-28   
443-212 5 Sparks-Glencoe MD   318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-212 6 Sparks-Glencoe MD   145J TERRA NOVA TELECOM INC. 238   2025-04-09   
443-212 7 Sparks-Glencoe MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-07-01   
443-212 8 Sparks-Glencoe MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-212 9 Sparks-Glencoe MD   876D ONVOY, LLC - MD 238   2021-05-21   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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