iotcreators.com shows even a few more, the full list there at the moment is:
Austria, Croatia, Czech Republic, Germany, Greece, Hungary, Italy, Liechtenstein, Poland, Slovakia, Spain, Switzerland, The Netherlands an United Kingdom.
looks like we’re getting somewhere! Norway and Belgium are on the top of our wishlist at the moment 
oh wow thats a bummer… (to put it lightly)
We were so exited that you guys matched the price of T-Mobile Germany (€12 for 30MB in 60 months = €0.20 per month https://iot.telekom.com/en/connectivity/business-smart-connect , and that even includes the simcard itself).
And we already communicated those prices to some customers !
I guess we’re back to using their sims instead then