Unsolicited Airtime PIN by SMS - why?

[DebDragon]

Hi, I'm on a pay monthly contract using my own handset. I have just had a PIN out of the blue from "Airtime". I have no idea why or whether I should be concerned that somebody is using my phone number somewhere? I've tried a Google search but with no firm answer. Can anyone advise please?

[MI5 · Accepted solution]

@DebDragon 

If you haven't requested it just delete and ignore.

Most likely that someone entered your number by mistake.

Scammers do try that tactic but it is usually associated with a phone call offering a discount or something else desirable.

[DebDragon]

Thanks MI5, I did receive some calls around the same time which my spam detection blocked! 

[MI5]

That explains it then @DebDragon 👍