I recently found a charge of $9.99 on my Sprint cell phone bill (which they were kind enough to remove).
A company called Shetra Pty Ltd had charged me for a premium text / SMS / short code service that I did not request. They used short code 54267.
This company seems to be based out of Australia, and I found this information online. I don't know how accurate this is:
Shetra Pty Ltd
1 Hill Street
firstname.lastname@example.org guy apparently owns dozens of websites and text message services that will send you horoscopes, jokes, love advice, and other random junk.
Review about: Premium Text Subscription.