Local Calling Guide

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Mount Calm, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
254-637 A MTCLTXXAPS0  1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-637 0   903C ONVOY, LLC - TX 556   2019-07-10   
254-637 1   624H ONVOY SPECTRUM, LLC 556   2021-12-04   
254-637 2   903C ONVOY, LLC - TX 556   2019-10-31   
254-637 3   903C ONVOY, LLC - TX 556   2019-10-31   
254-637 4   516J TON80 COMMUNICATIONS, LLC 556   2021-06-10   
254-637 5   624H ONVOY SPECTRUM, LLC 556   2021-07-08   
254-637 7   903C ONVOY, LLC - TX 556   2021-03-15   
254-637 8   004F BANDWIDTH.COM CLEC, LLC - TX 556   2020-03-05   
254-637 9   1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556   2015-09-07   
254-993 A MTCLTXXARP0  1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-993 0   508J CENTURYLINK COMMUNICATIONS, LLC 556   2015-01-19   
254-993 1   1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-993 2   1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-993 3   1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-993 4   1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-993 5   1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-993 6   1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-993 7   1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-993 8   1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-993 9   1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 556      
254-994 A WACOTXEY0MD  0132 AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX 556      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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