2F Authentication sms fishing?

I just wanted to sign in to my Creative Suite. Normally I recieve a sms from Adobe with the verification code. But today I received a sms from an e-mail address horikel548@gonaute.com with just six numbers. No extra text. I did not receive anything from Adobe. (I did not use the code to sign in but re-issued the code via mail). Is this some kind of fishing???