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: 419

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-419 A Glenwood MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-419 0 Glenwood MD   829J PAETEC ITEL, LLC 238      
443-419 1 Glenwood MD   829J PAETEC ITEL, LLC 238   2004-03-09   
443-419 2 Glenwood MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
443-419 3 Glenwood MD   829J PAETEC ITEL, LLC 238   2006-04-24   
443-419 4 Glenwood MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-03-03   
443-419 5 Glenwood MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-04-20   
443-419 6 Glenwood MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
443-419 7 Glenwood MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
443-419 8 Glenwood MD BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-11   
443-419 9 Glenwood MD   515J IP HORIZON LLC 238   2015-03-21   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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