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: 748

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-748 A Millersville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-748 0 Millersville MD   829J PAETEC ITEL, LLC 238      
443-748 1 Millersville MD   876D ONVOY, LLC - MD 238   2021-04-02   
443-748 2 Millersville MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-748 3 Millersville MD   829J PAETEC ITEL, LLC 238      
443-748 4 Millersville MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-748 5 Millersville MD   624H ONVOY SPECTRUM, LLC 238   2022-02-05   
443-748 6 Millersville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-748 7 Millersville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-748 9 Millersville MD   876D ONVOY, LLC - MD 238   2022-11-23   

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

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