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: 359

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-359 A Indian Head MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-359 0 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-03-14   
240-359 2 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-02-20   
240-359 3 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-07-12   
240-359 6 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-11-27   
240-359 7 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-11-27   
240-359 8 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-12-23   
240-359 9 Indian Head MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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