[1] CNAME Flattening: RFC-compliant support for CNAME at the root – CloudFlare Support ( (2014-05-09 04:15:41 +09:00 版)) https://support.cloudflare.com/hc/en-us/articles/200169056-Does-CloudFlare-support-CNAME-APEX-at-the-root-

[2] What’s Brave Done For My Privacy Lately? Episode #6: Fighting CNAME Trickery | Brave Browser, 2020-10-31T04:46:57.000Z https://brave.com/privacy-updates-6/

[3] Brave、CNAMEクローキングブロック機能追加へ | スラド IT, 2020-10-31T04:48:03.000Z https://it.srad.jp/story/20/10/31/0135204/