Going through my web server log, I found this:
2a06:98c0:3600::103 - - [26/May/2023:19:03:10 +0800] “GET /path/to/page HTTP/1.1” 304 - “-” “Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)”
Excerpt from the Whois report for the IP:
inet6num: 2a06:98c0:3000::/36
netname: CLOUDFLARENET-EU
descr: Cloudflare, Inc.
If someone can explain it, I will appreciate it.