'at www' is correct and usable in written English.
It can be used when referring to a website or web address. For example: "You can find more information about the event at www.example.com."
Online condolences may be shared at www. tallentfuneralservice.com.com
Information: (877) 844-3837 or at www. forevernetwork.com.com
The comprehensive site at www. horsenet.org features advice, chat, services, products and horses for sale.
Donations may be made to Columbia River Keeper at www. columbiariverkeeper.org.org
For more information, call (321) 449-4444 or take a look at www. kennedyspacecenter.com.
In lieu of flowers, please donate to the American Cancer Society at www. cancer.org.org
Dr. Stern has created an extensive Web site on "De Magnete" at www-spof.gsfc.nasa.gov/earthmag /demagint.htm.htm
Please view and sign the family guest book at www. pumphreyfuneralhome.com.com
Pilots can get mini-reviews about fly-in food worldwide on the Web, at www.100dollarhamburger.com.
Information: Chicago Office of Tourism at (877) 244-2246, or on the Web at www.877chicago.com.
Details at www.2000enfrance.com.com
