X.509 certificate metadata observed when communicating with miscellaneous non-HTTPS endpoints, such as IMAPS, POP3S, etc.
Dataset Details
The dataset contains a collection of metadata related to the net new X.509 certificates observed in each study when considering all SSL studies that ran prior. The _hosts and _endpoints files provide mapping between the IPs/endpoints and the fingerprint of the X.509 certificate presented. The _certs file provides a mapping of the net new certificates from a given study and the corresponding fingerprint. The _names file provides a mapping of the X.509 certificate name (CN) to its fingerprint.
Full Dataset Listing
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| File Name | SHA1-Fingerprint | Size | Updated At | |
|---|---|---|---|---|
|
20260228/2026-02-28-1772286829-imaps_993_names.gz |
388ef50adf8945d2ee8653585fc428e53d6cc161 
|
93.5 MB | Feb. 28, 2026 |
|
|
20260228/2026-02-28-1772286829-imaps_993_certs.gz |
3ae131629c6c71e4d3f43c6bb33a4eca1678fb85
|
4.5 GB | Feb. 28, 2026 |
|
|
20260227/2026-02-27-1772224290-smtp_starttls_587_names.gz |
537a62d2888b30f75c239a722642834944b0cd6b
|
51.5 MB | Feb. 27, 2026 |
|
|
20260227/2026-02-27-1772224290-smtp_starttls_587_certs.gz |
2175028aca0c96cf6cecfaa42da11e76c2a288a7
|
2.5 GB | Feb. 27, 2026 |
|
|
20260227/2026-02-27-1772206969-pop3_starttls_110_names.gz |
19c79a2389f583ce1862c66b4bbe1a993d6d9638
|
78.6 MB | Feb. 27, 2026 |
|
|
20260227/2026-02-27-1772206969-pop3_starttls_110_certs.gz |
7c5a654656a8f05090a4459ae32ad869d221da2d
|
3.5 GB | Feb. 27, 2026 |
|
|
20260227/2026-02-27-1772205217-smtp_starttls_25_names.gz |
4ee45ea2b60b917f887f40848b4f0cb1e9bf6984
|
72.3 MB | Feb. 27, 2026 |
|
|
20260227/2026-02-27-1772205217-smtp_starttls_25_certs.gz |
e7d3fc6a75bf58e3c2a10e7c1d7e70f2c0e03645
|
3.4 GB | Feb. 27, 2026 |
|
|
20260217/2026-02-17-1771295042-pop3_starttls_110_names.gz |
d33cd8e5458c91edad1f2c40b6939cd56205399c
|
79.9 MB | Feb. 17, 2026 |
|
|
20260217/2026-02-17-1771295042-pop3_starttls_110_certs.gz |
6bf93395d1e395295aeab20dc7b426f85021d7b0
|
3.8 GB | Feb. 17, 2026 |
