Hi,
I'm seeing this one on my company generated certs: https://oidref.com/2.16.840.1.113730.1.13
It's "Netscape certificate comment"
An X.509 v3 certificate extension used to include free-form text comments inside certificates.
Does that make sense?
Not in CT, but I can share.
I'll be doing a new one because of Chrome signalling lack of subj alt names...
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----