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: 270

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-270 A Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-270 0 Waldorf MD   876D ONVOY, LLC - MD 236   2015-07-06   
240-270 1 Waldorf MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-03-31   
240-270 2 Waldorf MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-03-31   
240-270 3 Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2012-01-10   
240-270 4 Waldorf MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2016-04-11   
240-270 5 Waldorf MD   876D ONVOY, LLC - MD 236   2012-10-07   
240-270 6 Waldorf MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2016-06-04   
240-270 7 Waldorf MD   318J COMCAST IP PHONE, LLC 236   2015-03-20   
240-270 8 Waldorf MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2016-08-15   
240-270 9 Waldorf MD   8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236   2015-08-17   

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

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