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: 358

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-358 A Damascus MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-358 0 Damascus MD   073H TELNYX LLC 236   2019-12-01   
240-358 1 Damascus MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2022-09-22   
240-358 2 Damascus MD   876D ONVOY, LLC - MD 236   2022-04-25   
240-358 3 Damascus MD   876D ONVOY, LLC - MD 236   2021-07-12   
240-358 4 Damascus MD   624H ONVOY SPECTRUM, LLC 236   2021-12-11   
240-358 5 Damascus MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-358 6 Damascus MD   624H ONVOY SPECTRUM, LLC 236   2021-12-11   
240-358 7 Damascus MD   876D ONVOY, LLC - MD 236   2021-09-24   
240-358 8 Damascus MD   876D ONVOY, LLC - MD 236   2021-09-24   
240-358 9 Damascus MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236      

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

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