I am using Cloudflare as DNS manager.
My firewall says Your DNS records have changed. from 104.27.159.15 to 104.18.63.25
I checked non of them is my IP.
104.27.159.15 is a bad reputaion IP as I Googled.
I checked all parts of the DNS on server and Cloudflare but did not see any changes.
The IP will change every few days or every few weeks. This is normal and not something you should be worried about.
Also, the IP address is only “bad reputation” since it’s used across so many sites. This doesn’t affect your SEO and won’t hurt your website.