Local Calling Guide

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NPA: 817 [Rate centres in NPA 817] [Dial plan for NPA 817]

NXX: 440

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-440 A Atlas TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
817-440 2 Atlas TX   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
817-440 3 Atlas TX   903C ONVOY, LLC - TX 552   2010-06-15   
817-440 4 Atlas TX   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-24   
817-440 5 Atlas TX   516C AT&T CORP. 552   2016-10-25   
817-440 6 Atlas TX   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2017-08-09   
817-440 7 Atlas TX   903C ONVOY, LLC - TX 552   2009-09-06   
817-440 9 Atlas TX   145J TERRA NOVA TELECOM INC. 552   2023-08-06   

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

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