Seems like it's sorted now? It resolves for me
$ dig gitbook.com a @8.8.8.8 +short
104.18.9.111
104.18.8.111 $ dig gitbook.com a @8.8.8.8 +short
104.18.9.111
104.18.8.111We are working on making sure that everything is correctly working.
Workaround that we've setup to allow our users to still access the platform through different hostnames will continue working.
We'll share more details in the postmortem.
Are you sure that's the best strategy?