Local Calling Guide

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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 243

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-243 A Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-243 0 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-243 1 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-243 2 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-243 3 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2014-09-19   
240-243 4 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-243 5 Gaithersburg MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2022-11-18   
240-243 6 Gaithersburg MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2018-11-21   
240-243 7 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-01-22   
240-243 8 Gaithersburg MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-11   
240-243 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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