TNS, Inc. (NYSE: TNS), a leading provider of business-critical, cost-effective data communications services for transaction-oriented applications, will hold its conference call to discuss fourth quarter 2011 results and 2012 outlook on Tuesday, March 6, 2012 at 5:00 p.m. Eastern Time. Fourth quarter results will be released after the close of the market that day. The dial-in number for the conference call is 617-597-5312 passcode #30820577. The call is also being webcast, and there will be an accompanying slide presentation, which can be accessed at www.tnsi.com. For those who cannot listen to the live broadcast, a replay of the call will be available from March 6, 2012 at 7:30 p.m. Eastern Time through March 13, 2012, and can be accessed by dialing 617-801-6888, passcode #72723295. About TNS Transaction Network Services (TNS) is a leading global provider of data communications and interoperability solutions. TNS offers a broad range of networks and innovative value-added services which enables transactions and the exchange of information in diverse industries such as retail, banking, payment processing, telecommunications and the financial markets. Founded in 1990 in the United States, TNS has grown steadily and now provides services in over 60 countries across the Americas, Europe and the Asia Pacific region, with our reach extending to many more. TNS has designed and implemented multiple data networks which support a variety of widely accepted communications protocols and are designed to be scalable and accessible by multiple methods. For further information about TNS, visit www.tnsi.com.