Want to know who owns a shortcode? Want to know what services are offered by a specific short code?
Until shortcode owners come out and publicly advertise their shortcode (I still dont know why they don't), I put together a list a SMS Shortcode Search Engine Engines.
US Short Code WhoIs
If you can't find it on one of these, just Google It
Or you can get one of your own.
If you know of any other sites that offer this service please let me know and I'll include them too.