There was a survey of available GNSS corrections services from a couple of years ago - some of these services are global and not limited to a single country: h

There was a survey of available GNSS corrections services from a couple of years ago - some of these services are global and not limited to a single country: https://medium.com/@mikehorton/what-is-a-mass-market-gnss-correction-network-do-they-work-for-survey-construction-and-farming-f41bd521f71c https://medium.com/@mikehorton/what-is-a-mass-market-gnss-co...