AT Atlantic Power Corporation

Alltel (NYSE:AT), owner of America's largest wireless network, announced today that it is offering parents a free mobile Web content filter to protect children from accessing potentially inappropriate Internet sites via their Alltel wireless phones. "Wireless customers are increasingly using their handsets to surf the Internet, and at Alltel we recognize that we have a responsibility to help parents protect their children from inappropriate content," said Scott Ford, Alltel president and chief executive officer. "While no content filter is perfect, the service that we are announcing today will go a long way toward insuring a more family-friendly mobile Web for our customers and their children." Account holders can use Alltel's Axcess Web Parental Controls to block a handset's ability to search the broader mobile Web while leaving it with access to family-friendly sites approved by Alltel. Additionally, account holders can choose whether or not to block access to Internet chat rooms. The content filter is free and may be added to any wireless account by calling Alltel technical support at 1-800-255-8351. Alltel is owner and operator of the nation's largest wireless network and has more than 10 million wireless customers. Alltel, NYSE: AT www.alltel.com