Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 692

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-692 A Grantsville MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-692 0 Grantsville MD   073H TELNYX LLC 240   2021-03-04   
240-692 1 Grantsville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2019-07-21   
240-692 2 Grantsville MD   876D ONVOY, LLC - MD 240   2020-01-06   
240-692 3 Grantsville MD   876D ONVOY, LLC - MD 240   2020-01-06   
240-692 4 Grantsville MD   876D ONVOY, LLC - MD 240   2021-03-04   
240-692 5 Grantsville MD   624H ONVOY SPECTRUM, LLC 240   2021-05-24   
240-692 6 Grantsville MD   876D ONVOY, LLC - MD 240   2023-06-16   
240-692 7 Grantsville MD   624H ONVOY SPECTRUM, LLC 240   2021-11-15   
240-692 8 Grantsville MD   624H ONVOY SPECTRUM, LLC 240   2021-11-15   

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

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