Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 686

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-686 A Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
240-686 0 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
240-686 1 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
240-686 2 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
240-686 3 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
240-686 4 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
240-686 5 Gaithersburg MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-08-12   
240-686 6 Gaithersburg MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2014-06-20   
240-686 7 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
240-686 8 Gaithersburg MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2007-07-28   
240-686 9 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2014-09-19   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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