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: 397

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-397 A Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-397 3 Solomons MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-397 4 Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
667-397 5 Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
667-397 6 Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-05-22   
667-397 7 Solomons MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-02-03   
667-397 8 Solomons MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-02-03   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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