Cloudflare showing up as registrar even though I have a different registrar

My website was registered through another service (AT&T Websites) but for some reason it is showing up in WHOIS as registered through Cloudflare, even though I have never used Cloudflare.

I am trying to transfer my domain to another registrar (authorization code / EPP) but can’t do this through AT&T Websites and I’ve never used Cloudflare before.

Why is my website showing as registered through Cloudflare?