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: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-421 A Columbia MD BLTMMDCHX7X  073H TELNYX LLC 238      
667-421 0 Columbia MD BLTQMD019MD  490J DISH WIRELESS, LLC 238      
667-421 1 Columbia MD BLTQMD019MD  490J DISH WIRELESS, LLC 238      
667-421 2 Columbia MD   876D ONVOY, LLC - MD 238      
667-421 3 Columbia MD   876D ONVOY, LLC - MD 238      
667-421 7 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-421 8 Columbia MD BLTMMDCHX7X  073H TELNYX LLC 238      
667-421 9 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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