said by sfisher10:
asked for a 744 number if we couldn't get our original number back. Need I say more?
CenturyLink (the current name for the entity under discussion) resulted from combining CenturyTel and Embarq. Years earlier, CenturyTel assumed control of KMC Telecom's operations in the state of Kansas. As I recall, KMC was the CLEC which supplied SunRocket with DIDs in the Southwestern states. KMC got into financial trouble ... so SunRocket had to force all customers with KMC numbers to change their numbers. (This was all before SR got into deep financial difficulties.)
This history tells us that CenturyLink (a/k/a CenturyTel) does act as a CLEC ... from whom VoIP providers may be able to get Kansas DIDs.
But your problem ... if indeed some SNAFU caused a disconnect of your TB number (such as by TB not paying their bill) ... is that all of the 316-744-xxxx numbers are under the control of Southwestern Bell ... except for those numbers which have been ported out to other CLECs/providers.
This means that the only way you can obtain a "new" 316-744-xxxx number would be to open a new PSTN account with SWB ... and then down the road you could port this new DID to a VoIP provider.
Incidentally, if CenturyTel (CenturyLink) tells you they cannot find your existing DID in their current database, perhaps their porting department (rather than lower tier level 1
customer support) can tell you who controls the number now.
Lastly, as a "Hail Mary" option, perhaps SWB can "force" a reclamation of your beloved DID. There are
rules to allow "forced" porting ... particularly when a CLEC (not a VoIP vendor) continually rejects a legitimate
request for porting out a number.