This is a cross-post from https://groups.google.com/a/chromium.org/g/ct-policy/c/TrBo1SXAgwM
This is to announce that we'll be shutting down our Oak 2022 CT log shard two weeks from now, on November 15, 2023. At that time, all log endpoints for the shard will begin serving a 404.
The 2022 shard aged out at the beginning of this year, so we're retiring it to reduce operational load and reclaim resources. For a list of the logs we operate, check out the CT logs page on our website.
If you still need access to data from Oak 2022 after Nov. 15, you can try Google's read-only mirror, but please be aware that Google hasn't published any SLA or lifecycle guarantee about their mirrors: https://ct.googleapis.com/logs/eu1/mirrors/letsencrypt_oak2022/