Denver, September 6, 2006 - Qwest Communications International Inc. (NYSE:Q) today announced that it has signed a multi-year agreement with Santa Clara, California-based OpSourceTM. OpSource is an industry-leading software-on-demand, also coined Software as a Service (SaaS), company offering high-quality enablement and delivery of software to customers who offer software applications remotely via the Web.

Qwest will provide state-of-the-art Qwest iQ NetworkingTM service, Qwest's wide-area network (WAN) solution, and give OpSource customers speeds up to 10 gigabits per second. When combined with its current bandwidth, OpSource will be able to provide customers a SaaS delivery platform with improved performance, reduced latency and better availability. The Qwest services will augment OpSource's existing Internet bandwidth capacity and provide customers nationally with a secure, reliable and fast Internet connection.

"We are pleased to be able to offer our on-demand customers with the kind of network performance, reliability and support that Qwest brings to the table," said Don Barlow, senior vice president of operations and engineering at OpSource. "Our customers have driven enormous growth in bandwidth consumption since the beginning of this year so it became critically important for us to seek a tier-one provider that can meet the exacting needs of our customers. Qwest delivered ahead of schedule, and the early feedback from our customers is extremely positive - all of which confirms we made the right choice with Qwest."

"Qwest is pleased to do business with OpSource and provide the kind of network performance and reliability demanded by the software industry and companies that provide services to the software industry," said Tom Richards, executive vice president, Qwest business markets group. "Our cost-effective, scalable and secure Qwest iQ Networking service is ideal for enterprise customers who want a customized wide-area networking solution, and who want to do business with a company that is easy to do business with."

Qwest launched iQ Networking in early 2004 as the company's convergence platform supporting any number of applications, such as voice over Internet protocol (VoIP), messaging and other IP communications. Qwest iQ Networking focuses on solving business problems, reducing total cost and delivering an unparalleled customer service experience.

About Qwest
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