Connecting SODAQ narrowband IoT Greece

Hello to everyone, I would like to ask if the NB-IoT module of SODAQ (with ublox chip) is supported from any telecommunication in Greece like vodafone. If not, is there an another way to use the module without using a base-station or making an other node ( NB-IoT module or SDR) behave like a base-station?
Thank you

As far as i know, you need a NB-IoT network to connect to.