[tunnuz]

I don’t recall doing that with a Hofer SIM card. However major other networks go a longer way recording who you are.

[girst]

Then you probably bought your SIM before 2019-01-01. Old SIM cards will have to be registered until September or they must be deactivated.

[croisillon]

I bought a burner phone in February (cash, no ID) and there was a HoT-SIM with it. I didn't try using it though.

[Findus23]

Check https://www.hot.at/aktivierung/index.html for details for HoT users.