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Carrollton, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-798 9 FRBRTXBLGT9  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2024-09-20   
972-810 A DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-810 0   793K TWC IP ENABLED SERVICES, LLC 552   2012-02-17   
972-810 1 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-28   
972-810 2 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2013-11-04   
972-810 3 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2011-11-15   
972-810 4 DLLSTXHM0MD  829J PAETEC ITEL, LLC 552   2011-09-13   
972-810 5 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2011-09-11   
972-810 6 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-01-23   
972-810 7 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2012-02-19   
972-810 8 DLLRTXVM0MD  506J TWILIO INTERNATIONAL, INC. 552   2013-11-29   
972-810 9 DLLRTXVM0MD  506J TWILIO INTERNATIONAL, INC. 552   2013-11-29   
972-820 A DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-820 0 DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-820 1 DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2007-05-19   
972-820 2 DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-820 3 DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-820 4 DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-820 5 DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-820 6 DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-820 7 DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-820 8 DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-820 9 DLLSTXREDS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-862 A CRTNTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-939 A CRTNTXXBDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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