Received spamming text messages from this number: Get a free iPhone4S, enter code "FREE" at http://promodaygiveaway.com/iphone4s.  

If you go to the website and click unsubscribe, this is what you get:  Not Found

The requested URL /iphone4s/unsubscribe.php was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/1.0.0-fips mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at promodaygiveaway.com Port 80