Client in Oman reports Sanity blocked, issue traced to ISP

Hey wondering if anyone can help I am working with a client in Oman and they are saying Sanity is blocked there. Is anyone aware of this issue / why ? I think they can get around it by using a VPN but just wondering if anyone has any info on this issue.

I don’t believe that Sanity is blocked in Oman, as we operate on GCP and it offers cloud services there.

Sorry turns out it was the clients ISP so all good.