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: 715

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-715 A North East MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-715 0 North East MD   829J PAETEC ITEL, LLC 238      
443-715 1 North East MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2025-06-13   
443-715 2 North East MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2016-10-19   
443-715 3 North East MD   829J PAETEC ITEL, LLC 238      
443-715 4 North East MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-04-29   
443-715 5 North East MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-715 6 North East MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-04-29   
443-715 7 North East MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-16   
443-715 8 North East MD   876D ONVOY, LLC - MD 238   2025-09-28   
443-715 9 North East MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-09-12   

Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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