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: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-256 A Leonardtown MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-256 0 Leonardtown MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-02-27   
240-256 1 Leonardtown MD TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236   2004-02-05   
240-256 2 Leonardtown MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2022-09-02   
240-256 3 Leonardtown MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-03-03   
240-256 4 Leonardtown MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2014-11-15   
240-256 5 Leonardtown MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2004-05-16   
240-256 6 Leonardtown MD WASHDC127MD  073H TELNYX LLC 236   2017-03-14   
240-256 7 Leonardtown MD WASHDCCZDS1  4773 XO MARYLAND, LLC 236   2005-08-15   
240-256 8 Leonardtown MD WASHDCCZDS1  4773 XO MARYLAND, LLC 236   2005-08-15   
240-256 9 Leonardtown MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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