7:57 UTC: first reports coming in
I noticed this issue quite quickly ("reported" at 7:54 UTC [1]), and I noticed I wasn't alone thanks to Twitter / X. I tried to get in touch with Cloudflare to report this issue - but I haven't found any meaningful contact other than Twitter.
For such an important service, I'm impressed there is no contact email / form where you can get in touch with the engineers responsible for keeping the service up and running.
Other than that, kudos for the well written blog post - as always!
[1]: https://nitter.net/DenysVitali/status/1709476961523835246