Google is not indexing sites with .post extension, when searching for "site:.post" there are no results. So it's not easy way to know if is there any other .pos

Google is not indexing sites with .post extension, when searching for "site:.post" there are no results. So it's not easy way to know if is there any other .post domain. I could only find "www.posteitaliane.post" and "www.ems.post".