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: 248

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-248 A Ridge MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-248 0 Ridge MD   073H TELNYX LLC 236   2021-12-23   
240-248 1 Ridge MD   624H ONVOY SPECTRUM, LLC 236   2021-05-21   
240-248 2 Ridge MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2023-08-19   
240-248 3 Ridge MD   876D ONVOY, LLC - MD 236   2021-07-12   
240-248 4 Ridge MD   073H TELNYX LLC 236   2024-02-04   
240-248 5 Ridge MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2021-12-02   
240-248 6 Ridge MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2023-02-27   
240-248 7 Ridge MD   624H ONVOY SPECTRUM, LLC 236   2021-11-15   
240-248 8 Ridge MD   624H ONVOY SPECTRUM, LLC 236   2021-11-15   
240-248 9 Ridge MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236      

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

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