Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 837

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-837 A Port Deposit MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-837 0 Port Deposit MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-12-07   
667-837 1 Port Deposit MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-12-07   
667-837 2 Port Deposit MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
667-837 3 Port Deposit MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
667-837 4 Port Deposit MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-12-07   
667-837 5 Port Deposit MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
667-837 6 Port Deposit MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
667-837 7 Port Deposit MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
667-837 8 Port Deposit MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
667-837 9 Port Deposit MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-30   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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