One.one.one.one fingerprint mismatch

When I go to the one.one.one.one/help site and verify the sites fingerprint using GRC https://www.grc.com/fingerprints.htm I get a sha1 signature that doesn’t match.1

one%20fingerprint

The fingerprint sections should match in this case sha1. this was performed from my home network through my ISP Vmedia so i cannot understand why the fingerprint mismatch.

Note how the certificates’ CNs are different. You are having two different certificates here.

This is most likely not because the server offers a different certificate to you than to that website, but rather because you hit a completely different data centre than that website. Remember, on Cloudflare’s network an IP address does not point to one single machine, but an entire array of them.