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: 875

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-875 A Mount Airy MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-875 0 Mount Airy MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2021-11-22   
240-875 1 Mount Airy MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2021-11-22   
240-875 2 Mount Airy MD   624H ONVOY SPECTRUM, LLC 240   2021-05-24   
240-875 3 Mount Airy MD   624H ONVOY SPECTRUM, LLC 240   2022-01-16   
240-875 4 Mount Airy MD   876D ONVOY, LLC - MD 240   2024-03-02   
240-875 5 Mount Airy MD   876D ONVOY, LLC - MD 240   2021-03-04   
240-875 6 Mount Airy MD   876D ONVOY, LLC - MD 240   2021-03-04   
240-875 7 Mount Airy MD   876D ONVOY, LLC - MD 240   2019-12-11   
240-875 8 Mount Airy MD   876D ONVOY, LLC - MD 240   2019-12-11   
240-875 9 Mount Airy MD   624H ONVOY SPECTRUM, LLC 240   2022-01-16   

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

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