Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 368

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-368 A Damascus MD DMSCMDDERP0  9212 VERIZON MARYLAND, INC. 236      
301-368 0 Damascus MD   073H TELNYX LLC 236   2023-12-15   
301-368 1 Damascus MD   9212 VERIZON MARYLAND, INC. 236      
301-368 2 Damascus MD   829J PAETEC ITEL, LLC 236   2007-08-03   
301-368 3 Damascus MD   9212 VERIZON MARYLAND, INC. 236      
301-368 4 Damascus MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2017-10-20   
301-368 5 Damascus MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-368 6 Damascus MD   073H TELNYX LLC 236   2018-10-18   
301-368 7 Damascus MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-368 8 Damascus MD   073H TELNYX LLC 236   2017-04-27   
301-368 9 Damascus MD   9212 VERIZON MARYLAND, INC. 236      

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

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