The Sunlight logo, a bench under a tree in stylized black ink, cast against a large yellow sun, with the text Sunlight underneath

This is a Sunlight Certificate Transparency log instance.

Metrics are available.

The Geomys logo, an ink outline of a quaint Italian town on the side of a mountain.

Tuscolo is operated by Geomys. It was announced on the ct-policy mailing list, and its live configuration, usage statistics, and current status are publicly available, along with a JSON index of the logs’ metadata.

The following logs are active.

tuscolo2026h2.sunlight.geomys.org

Log ID: Rq+GPTs+5Z+ld96oJF02sNntIqIj9GF3QSKUUu6VUF8=
Monitoring prefix: https://tuscolo2026h2.skylight.geomys.org/
Submission prefix: https://tuscolo2026h2.sunlight.geomys.org/
Interval: 2026-07-01T00:00:00Z – 2027-01-01T00:00:00Z
Links: checkpoint key get-roots json
Ratelimit: 150 req/s 

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEaA6P0i7JTsd9XfzF1/76avRWA3XX
I4NStsFO/aFtBp6SY7olDEMiPSFSxGzFQjKA1r9vgG/oFQwurlWMy9FQNw==
-----END PUBLIC KEY-----

Submit a certificate chain (PEM or JSON)

tuscolo2027h1.sunlight.geomys.org

Log ID: WW5sM4aUsllyolbIoOjdkEp26Ag92oc7AQg4KBQ87lk=
Monitoring prefix: https://tuscolo2027h1.skylight.geomys.org/
Submission prefix: https://tuscolo2027h1.sunlight.geomys.org/
Interval: 2027-01-01T00:00:00Z – 2027-07-01T00:00:00Z
Links: checkpoint key get-roots json
Ratelimit: 150 req/s 

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEOYwwGoaNpZ/SQW0VNGICP7wGRQsS
eEowTRl4DPSdPjSkO/+ouvFH78I8sQTR3FWPZDScALbclBqnqL0ptY8beA==
-----END PUBLIC KEY-----

Submit a certificate chain (PEM or JSON)

tuscolo2027h2.sunlight.geomys.org

Log ID: 1d5V7roItgyf/BjFE75qYLoARga8WVuWu0T2LMV9Ofo=
Monitoring prefix: https://tuscolo2027h2.skylight.geomys.org/
Submission prefix: https://tuscolo2027h2.sunlight.geomys.org/
Interval: 2027-07-01T00:00:00Z – 2028-01-01T00:00:00Z
Links: checkpoint key get-roots json
Ratelimit: 150 req/s 

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEIAz2gOD7wIptaiLTnmR4k7AQwp5k
FmqmGHY/8JmMJxaSHyAipoFA/YSBCTX7ZowxIkSKpZYGlqLtdLVcLWDS5w==
-----END PUBLIC KEY-----

Submit a certificate chain (PEM or JSON)

tuscolo2028h1.sunlight.geomys.org

Log ID: TefD7+U3ZpoMsB44OPqv3PCMmoBWM55wK1iVm9FxiS4=
Monitoring prefix: https://tuscolo2028h1.skylight.geomys.org/
Submission prefix: https://tuscolo2028h1.sunlight.geomys.org/
Interval: 2028-01-01T00:00:00Z – 2028-07-01T00:00:00Z
Links: checkpoint key get-roots json
Ratelimit: 150 req/s 

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEoCrY9Jw/QWI36H+7Y8UlXfNOxk2A
tg3H3nXSqLKz52sV4RV9ERRq/IjD4uSP/k5xCT+4nHCjAL8kRjGUeslejw==
-----END PUBLIC KEY-----

Submit a certificate chain (PEM or JSON)

tuscolo2028h2.sunlight.geomys.org

Log ID: A18eYQnn44YBqbhkHlfl9aePeIcnUy/PQlPx68mqDzk=
Monitoring prefix: https://tuscolo2028h2.skylight.geomys.org/
Submission prefix: https://tuscolo2028h2.sunlight.geomys.org/
Interval: 2028-07-01T00:00:00Z – 2029-01-01T00:00:00Z
Links: checkpoint key get-roots json
Ratelimit: 150 req/s 

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEFvXbrz+N3iRcf4pomNlyVokxas/f
GQu1DqxIbZ9M34w9W98lDao2v6qV7mRDDDcoh2kSfyAe6GxLuBMrmRPEMg==
-----END PUBLIC KEY-----

Submit a certificate chain (PEM or JSON)