I sold httpstatuses.com (website and domain) in... 2016 I think, maybe 2017, and the acquirers kept it as-is until 2022. Someone (not me) recently relaunched the site (as it was opensource) under a new domain -- https://httpstatuses.io -- so if you can replace ".com" with ".io" in your muscle memory, you can get the original site!
Their blog post about reviving the project: https://jkulton.com/2022/reviving-httpstatuses