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: 338

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-338 A Crofton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-338 0 Crofton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-01-27   
667-338 1 Crofton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-01-27   
667-338 2 Crofton MD   876D ONVOY, LLC - MD 238   2021-10-31   
667-338 3 Crofton MD   876D ONVOY, LLC - MD 238   2021-10-31   
667-338 4 Crofton MD   876D ONVOY, LLC - MD 238   2021-10-31   
667-338 5 Crofton MD   876D ONVOY, LLC - MD 238   2022-11-28   
667-338 6 Crofton MD   624H ONVOY SPECTRUM, LLC 238   2022-02-12   
667-338 7 Crofton MD   624H ONVOY SPECTRUM, LLC 238   2022-02-12   
667-338 8 Crofton MD   624H ONVOY SPECTRUM, LLC 238   2021-11-01   
667-338 9 Crofton MD   197D VONAGE AMERICA LLC 238   2022-10-07   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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