Is there a rate decrease recently? #89
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I noticed a rate decrease and I keep getting fewer certificates than before. Anyone detect the same? |
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Replies: 3 comments 3 replies
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Hi there, yeah, there was definitely a decrease of certs being published recently. According to my data, it comes down to Cloudflare's servers providing less certs. 
The behavior of the cloudflare nimbus2026 log (ct.cloudflare.com/logs/nimbus2026) changed dramatically since 2025-12-10 at 19:22 UTC. |
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Cloudflare even shows the decrease on their own CT Monitoring tool: https://radar.cloudflare.com/certificate-transparency/log/nimbus2026 
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The number of certs published in the Sectigo log also dropped significantly, as recorded by cloudflare. 
Sectigo logs always caused trouble for me anyway. And as it can be seen in my records, Cloudflare's log seems to only publish certificates between minutes 05 through 15 each hour (e.g. 21:05-21:15). 
And it seems that the reason to it is a significant decrease of published certificates by Let's Encrypt (Internet Security Research Group) on 2025-12-09 at about 22:45 / 23:00 UTC: 
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PS: I'll convert this to a discussion as it is not an issue with certstream. |
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I don't see any certificates coming from Let's Encrypt since 12/8. Somebody else experiencing the same? |
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Yes, same for me. Might be related to Let's Encrypt's announcement to shut down their RFC 6962 Logs: https://letsencrypt.org/2025/08/14/rfc-6962-logs-eol LE plans to only run static CT logs in the future due to increasing cost of running RFC 6962 Logs. There is currently no support for such logs in certstream-server-go. A feature request for this can be found here: #66 |
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The number of certs published in the Sectigo log also dropped significantly, as recorded by cloudflare.
Sectigo logs always caused trouble for me anyway. And as it can be seen in my records, Cloudflare's log seems to only publish certificates between minutes 05 through 15 each hour (e.g. 21:05-21:15).
And it seems that the reason to it is a significant decrease of published certificates by Let's Encrypt (Internet Security Research Group) on 2025-12-09 at about 22:45 / 23:00 UTC: