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: 301

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-301 A Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-301 0 Clear Spring MD   876D ONVOY, LLC - MD 240   2021-04-29   
240-301 1 Clear Spring MD   876D ONVOY, LLC - MD 240   2020-08-08   
240-301 2 Clear Spring MD   876D ONVOY, LLC - MD 240   2020-08-08   
240-301 3 Clear Spring MD   876D ONVOY, LLC - MD 240   2020-10-17   
240-301 4 Clear Spring MD   876D ONVOY, LLC - MD 240   2020-10-17   
240-301 5 Clear Spring MD   876D ONVOY, LLC - MD 240   2021-03-04   
240-301 7 Clear Spring MD   876D ONVOY, LLC - MD 240   2021-05-21   
240-301 8 Clear Spring MD   876D ONVOY, LLC - MD 240   2021-04-29   
240-301 9 Clear Spring MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2020-12-04   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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