MADISON, Wis. (6/8/09)--The domain name for the website of Summit CU, Madison, Wis., expired at midnight Thursday, which meant the website was inaccessible to some members Friday. The domain name expired due to improper vendor notification. The domain, www.summitcreditunion.com, was reactivated in the early morning hours as soon as it was discovered, the credit union said in a telephone recording. Members’ Internet service providers needed to reactivate the domain, and depending on when the reactivation took place, some members may have had trouble accessing the site throughout the day Friday, Summit said. Summit assured members that their information was safe and secure. The largest credit union in the state, Summit has $1.2 billion in assets.