Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Washington Zone 13, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-790 A MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-790 0   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-790 1   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-790 2   5562 METROPCS, INC. 236   2016-07-24   
240-790 3   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-790 4   5562 METROPCS, INC. 236   2020-04-02   
240-790 6   5562 METROPCS, INC. 236   2016-09-26   
240-790 7   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-790 8   318J COMCAST IP PHONE LLC 236   2017-04-19   
240-790 9   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-845 A WASHDCCZDS0  4773 XO MARYLAND, LLC 236      
240-845 0   4773 XO MARYLAND, LLC 236      
240-845 1   4773 XO MARYLAND, LLC 236      
240-845 2   082H LOCAL ACCESS LLC - MD 236   2016-10-14   
240-845 3   082H LOCAL ACCESS LLC - MD 236   2016-10-14   
240-845 4   5562 METROPCS, INC. 236   2017-08-19   
240-845 5   4773 XO MARYLAND, LLC 236      
240-845 6   5562 METROPCS, INC. 236   2018-07-01   
240-845 7   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2017-07-27   
240-845 8   073H TELNYX LLC 236   2017-04-27   
240-845 9   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-965 A CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-965 0   4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-965 1   4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-965 2   4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-965 3   4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-965 4   4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-965 5   318J COMCAST IP PHONE LLC 236   2015-06-17   
240-965 6   318J COMCAST IP PHONE LLC 236   2006-12-14   
240-965 7   318J COMCAST IP PHONE LLC 236   2006-12-14   
240-965 8   4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-965 9   4716 PAETEC COMMUNICATIONS, INC. - MD 236      
301-206 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-207 A SLSPMDSSX6X  6630 USA MOBILITY WIRELESS, INC. 236      
301-220 A CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-220 0   9212 VERIZON MARYLAND, INC. 236      
301-220 1   9212 VERIZON MARYLAND, INC. 236      
301-220 2   9212 VERIZON MARYLAND, INC. 236      
301-220 3   9212 VERIZON MARYLAND, INC. 236      
301-220 4   9212 VERIZON MARYLAND, INC. 236      
301-220 5   9212 VERIZON MARYLAND, INC. 236      
301-220 6   876D ONVOY, LLC - MD 236   2021-02-18   
301-220 7   9212 VERIZON MARYLAND, INC. 236      
301-220 8   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-220 9   9212 VERIZON MARYLAND, INC. 236      
301-286 A CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-289 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-289 0   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-289 1   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-289 2   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   

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Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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