Sorry for resurrecting this thread, but I'm looking for an anonymous prepaid SIM card, possibly from Europe. I'm resident in Switzerland, but I would only need the card to receive service-activation SMS. If it's possible to top it up online with BTC even better, but not strictly necessary.
It is important that this SIM card is not "registered to another user", but completely "anonymous". If I read it correctly, there are still a few countries in Europe that allow this, like Austria, Czech Republic, Iceland, and UK, am I right?
I had a quick look on some dark markets, but either it's not a very popular good, or I've been using the wrong search words.
Any help appreciated