They bought the trademark. From https://www.centos.org/legal/trademarks/ https://www.centos.org/legal/trademarks/ > The CentOS Marks are trademarks of Red Hat,

They bought the trademark. From https://www.centos.org/legal/trademarks/ https://www.centos.org/legal/trademarks/ > The CentOS Marks are trademarks of Red Hat, Inc. (“Red Hat”). Most servers that distribute current binary RPMs are mirrors operated by third parties. You can be reasonably certain that servers like www.centos.org, mirror.centos.org, vault.centos.org, or buildlogs.centos.org are paid for by Red Hat. Their IPs are mostly AWS. https://www.redhat.com/ja/about/press-releases/red-hat-and-centos-join-forces https://www.redhat.com/ja/about/press-releases/red-hat-and-c...