The HTML way for that is HTTP Referer https://en.wikipedia.org/wiki/HTTP_referer#:~:text=In%20HTTP%2C%20%22%20Referer%20%22%20%28a%20misspelling%20of,web%20page

The HTML way for that is HTTP Referer https://en.wikipedia.org/wiki/HTTP_referer#:~:text=In%20HTTP%2C%20%22%20Referer%20%22%20%28a%20misspelling%20of,web%20page%20can%20see%20where%20the%20request%20originated https://en.wikipedia.org/wiki/HTTP_referer#:~:text=In%20HTTP... Your server would need to log and report on those entries. Of course, for privacy and other reasons, this is probably not dependable any more.