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: 200

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-200 A Columbia MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-200 0 Columbia MD   876D ONVOY, LLC - MD 238   2016-02-18   
667-200 1 Columbia MD   876D ONVOY, LLC - MD 238   2016-04-28   
667-200 2 Columbia MD   876D ONVOY, LLC - MD 238   2016-04-28   
667-200 3 Columbia MD   876D ONVOY, LLC - MD 238   2017-06-18   
667-200 4 Columbia MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2017-12-22   
667-200 5 Columbia MD   318J COMCAST IP PHONE, LLC 238   2016-04-22   
667-200 6 Columbia MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-05-31   
667-200 7 Columbia MD   5562 METROPCS, INC. 238   2016-03-05   
667-200 8 Columbia MD   5562 METROPCS, INC. 238   2016-03-05   
667-200 9 Columbia MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-05-31   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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