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: 404

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-404 A Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-404 0 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-404 1 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236   2002-07-01   
240-404 2 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236   2002-07-01   
240-404 3 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236   2002-07-01   
240-404 4 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236   2002-07-01   
240-404 5 Gaithersburg MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236   2002-07-01   
240-404 6 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-404 7 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-404 8 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2008-06-09   
240-404 9 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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