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Fort Worth, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
817-814 4   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-814 5   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-814 6   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-814 7   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-814 8   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-814 9   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-815 A FTWOTXEDDS0  9533 SOUTHWESTERN BELL 552      
817-815 0   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-815 1   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-815 2   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-815 3   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-815 4   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-815 5   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-815 6   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-815 7   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-815 8   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-815 9   9533 SOUTHWESTERN BELL 552   2005-12-22   
817-817 A DLLSTX3769Z  473F USFON, INC. - TX 552      
817-817 0   139F WORLDCALL INTERCONNECT INC. 552   2023-03-11   
817-817 1   139F WORLDCALL INTERCONNECT INC. 552   2023-03-11   
817-817 2   473F USFON, INC. - TX 552   2023-03-10   
817-817 3   473F USFON, INC. - TX 552   2023-03-10   
817-817 4   473F USFON, INC. - TX 552   2023-03-10   
817-817 5   473F USFON, INC. - TX 552   2023-03-10   
817-817 6   473F USFON, INC. - TX 552   2023-03-10   
817-817 7   473F USFON, INC. - TX 552   2023-03-10   
817-817 8   473F USFON, INC. - TX 552   2023-03-10   
817-817 9   473F USFON, INC. - TX 552   2023-03-10   
817-820 A FTWOTXEDDS5  9533 SOUTHWESTERN BELL 552      
817-820 0   9533 SOUTHWESTERN BELL 552      
817-820 1   9533 SOUTHWESTERN BELL 552      
817-820 2   9533 SOUTHWESTERN BELL 552      
817-820 3   9533 SOUTHWESTERN BELL 552      
817-820 4   9533 SOUTHWESTERN BELL 552      
817-820 5   9533 SOUTHWESTERN BELL 552      
817-820 6   9533 SOUTHWESTERN BELL 552      
817-820 7   9533 SOUTHWESTERN BELL 552      
817-820 8   9533 SOUTHWESTERN BELL 552      
817-820 9   5562 METROPCS, INC. 552   2011-03-02   
817-831 A FTWOTXTEDS0  9533 SOUTHWESTERN BELL 552      
817-834 A FTWOTXTEDS0  9533 SOUTHWESTERN BELL 552      
817-834 0   9533 SOUTHWESTERN BELL 552      
817-834 1   9533 SOUTHWESTERN BELL 552      
817-834 2   9533 SOUTHWESTERN BELL 552      
817-834 3   9533 SOUTHWESTERN BELL 552      
817-834 4   9533 SOUTHWESTERN BELL 552      
817-834 5   9533 SOUTHWESTERN BELL 552      
817-834 6   9533 SOUTHWESTERN BELL 552      
817-834 7   9533 SOUTHWESTERN BELL 552      
817-834 8   9533 SOUTHWESTERN BELL 552      
817-834 9   5562 METROPCS, INC. 552   2020-12-28   
817-838 A FTWOTXTEDS0  9533 SOUTHWESTERN BELL 552      
817-840 A DLLSTXTLDS8  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
817-840 0   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
817-840 1   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
817-840 2   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
817-840 3   829J PAETEC ITEL, LLC 552   2010-04-02   
817-840 4   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2012-11-16   
817-840 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2009-07-10   
817-840 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2009-07-10   
817-840 7   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2010-12-16   
817-840 8   5562 METROPCS, INC. 552   2012-02-23   
817-840 9   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
817-841 A FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      
817-841 0   5562 METROPCS, INC. 552   2009-02-19   
817-841 1   515J IP HORIZON LLC 552   2013-05-05   
817-841 2   5562 METROPCS, INC. 552   2009-02-19   
817-841 3   9533 SOUTHWESTERN BELL 552      
817-841 4   5562 METROPCS, INC. 552   2009-03-05   
817-841 5   5562 METROPCS, INC. 552   2009-03-05   
817-841 6   5562 METROPCS, INC. 552   2009-03-05   
817-841 7   5562 METROPCS, INC. 552   2009-03-05   
817-841 8   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2008-12-10   
817-841 9   004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-01-20   
817-844 A   114J EXIANT COMMUNICATIONS LLC 552      
817-847 A FTWOTXCEDS0  9533 SOUTHWESTERN BELL 552      
817-850 A FTWOTXEDDS0  9533 SOUTHWESTERN BELL 552      
817-852 A FTWOTXEDDS0  9533 SOUTHWESTERN BELL 552      
817-852 0   9533 SOUTHWESTERN BELL 552      
817-852 1   9533 SOUTHWESTERN BELL 552      
817-852 2   9533 SOUTHWESTERN BELL 552      
817-852 3   9533 SOUTHWESTERN BELL 552      
817-852 4   9533 SOUTHWESTERN BELL 552      
817-852 5   5562 METROPCS, INC. 552   2010-02-28   
817-852 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2008-11-10   
817-852 7   9533 SOUTHWESTERN BELL 552      
817-852 8   9533 SOUTHWESTERN BELL 552      
817-852 9   5562 METROPCS, INC. 552   2011-03-02   
817-862 A FTWOTXPEDS0  9533 SOUTHWESTERN BELL 552      
817-862 0   5562 METROPCS, INC. 552   2009-03-05   
817-862 1   5562 METROPCS, INC. 552   2009-03-05   
817-862 2   9533 SOUTHWESTERN BELL 552      
817-862 3   5562 METROPCS, INC. 552   2009-03-05   
817-862 4   9533 SOUTHWESTERN BELL 552      
817-862 5   9533 SOUTHWESTERN BELL 552      
817-862 6   5562 METROPCS, INC. 552   2009-03-05   
817-862 7   516C AT&T CORP. 552   2011-01-10   
817-862 8   5562 METROPCS, INC. 552   2012-02-23   
817-862 9   792K CHARTER IP ENABLED SERVICES, LLC 552   2013-09-16   
817-867 A FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      

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Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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