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: 647

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-647 A North East MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-647 0 North East MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2022-10-01   
667-647 1 North East MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-03-04   
667-647 2 North East MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
667-647 3 North East MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
667-647 4 North East MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-02-04   
667-647 6 North East MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-06-26   
667-647 7 North East MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-02-04   
667-647 9 North East MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2025-09-20   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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