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: 290

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-290 A Baltimore MD BLTMMDCHXHX  515J IP HORIZON LLC 238      
667-290 0 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-01   
667-290 1 Baltimore MD   515J IP HORIZON LLC 238   2020-10-31   
667-290 2 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-01   
667-290 3 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-01   
667-290 4 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-01   
667-290 5 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-01   
667-290 6 Baltimore MD   876D ONVOY, LLC - MD 238   2020-12-26   
667-290 7 Baltimore MD   876D ONVOY, LLC - MD 238   2020-12-26   
667-290 8 Baltimore MD   876D ONVOY, LLC - MD 238   2021-02-18   
667-290 9 Baltimore MD   876D ONVOY, LLC - MD 238   2021-02-18   

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

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