I was wondering what happened to these brands. Trinsic used to be Z-Tel until UNE-P went away. Z-Tel disappeared along with the revenue to be renamed as Trinsic before filing BK. "On March 26, 2007, Matrix Telecom, through its parent company Platinum Equity," acquired the assets of Trinsic. Z-Tel IPO'ed in 1999 for $102M from its headquarters in Tampa. "On March 16, 2010, Matrix announced it would acquire the customers and substantially all the assets of Excel Telecommunications." [wiki] In 2013, Impact telecom acquired Matrix Telecom Inc and AmericaTel (which owned Startec). Now all under 1 umbrella.