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: 396

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-396 A Odenton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-396 0 Odenton MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-10-12   
443-396 1 Odenton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-396 2 Odenton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
443-396 3 Odenton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-03-07   
443-396 5 Odenton MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2020-10-28   
443-396 6 Odenton MD   515J IP HORIZON LLC 238   2017-07-07   
443-396 7 Odenton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2018-05-27   
443-396 8 Odenton MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-396 9 Odenton MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2020-04-02   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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