Which country uses Luno?

Can you please elaborate on which countries utilize the cryptocurrency platform Luno? I understand that Luno is a popular and widely-used platform for buying, selling, and storing digital currencies like Bitcoin, Ethereum, and others. However, I'm curious to know if there are any specific regions or nations where Luno has a particularly strong presence or user base. Additionally, I'm interested in knowing if there are any restrictions or regulations in place that impact Luno's usage in certain countries. Your insight into this matter would be greatly appreciated.