Good question, I haven't tried to browse from abroad, so I have no idea, but it could be the case since they only operate in Israel.
I don't have a VPN to test, but I did ask ChatGPT [1] to try browsing it from its IP and it also failed. Afterwards I asked it to tell me what it sees from https://icanhazip.com, and it returned `74.7.36.81`, which is in London according to [2]
https://ksp.co.il/