O
Otakar Hirs
All of the three available carriers - T-Mobile, O2, Vodafone - are starting to offer NB-IoT networks in Czechia, but none is currently included in the coverage map.
https://t-business.cz/cs/produkty/prumysl-4-0/iot-internet-veci
https://www.o2.cz/podnikatele-a-firmy/firemni-reseni/iot
https://www.vodafone.cz/podnikatele/internet-veci/iot-site