I'm from The Things Industries and The Things Network team. LoRaWAN standard specifies regional parameters, that is - specific ISM spectrum bands for every region where LoRaWAN is used. All of the regional parameters are supported by The Things Network and The Things Stack, you would only need to get hardware that has the radio of the frequency you need. It is specified in here (https://www.thethingsnetwork.org/docs/lorawan/frequencies-by...) and in LoRa Alliance standard https://lora-alliance.org/wp-content/uploads/2021/05/RP002-1...