Should I reach out?

So I had a friend when I was in school who was my coach. He really helped me throughout school especially with a few personal issues that I had. He even told my principal that me and him had a special relationship. I left school at 18 and we kept in touch for 6 years and we met for a coffee. Our texts went down to once a year in the last two years but he would always reply saying how nice it was to hear from me and he even called me once. But then 3 years ago when I would text him I wouldn't get a reply and when I called him I would get a "this number is not recognised" message. I thought maybe he blocked me but I rang him today on my work phone and his number actually rang. Im figuring he definitely blocked me but I was going to ring him on my work phone and ask him if he blocked me and say hello. Should I call him or just leave it?

Should I reach out?
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