C
73/100
- Issuer
- Let's Encrypt
- Max TLS
- TLS1.2
- Cipher
- ECDHE-RSA-AES128-GCM-SHA256
- Expires
- 9/17/2026 (expired 47 days ago)
- HSTS
- Disabled
- OCSP Stapling
- Disabled
- Last scanned
- 9/9/2026, 7:44:29 PM
Why is the score low?
C · 73/100-
-20
Expiring soonRenew soon; keep more than 30 days of validity remaining
-
-5
TLS 1.3 not enabledEnable TLS 1.3 on the server
-
-2
Certificate chain too longOptimize the chain; remove extra intermediate certificates
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Report summary
ai-db.science currently holds an SSL grade of C (73/100) from CertH TLS health monitoring. The site supports TLS1.2, does not enable HSTS, and its certificate is issued by Let's Encrypt — the certificate has expired. CertH records daily TLS handshake probes into an auditable certificate health trend.
Poor — Clear security flaws: TLS 1.0 support, or weak ciphers such as RC4 / 3DES.
ai-db.science scores higher than 5% of the 12,267 sites we grade.
Last scanned 55 days ago — this data may be stale
Full certificate & config details
- Common Name
- ai-db.science
- Key
- rsaencryption 2048bit
- Sig Hash
- SHA-256
- SAN
- *.ai-db.science · ai-db.science
- Fingerprint
- 8ce92fbe66028d57318ad205c64522ae41a0f5af11dc5a8548ad74d4a1d3263a
Risk flags
No notable risks
What’s working
- Complete certificate chain
- No legacy TLS or weak ciphers
Score trend
Recent history
| Time | Grade | Score | Issuer |
|---|---|---|---|
| 9/9/2026, 7:44:29 PM | C | 73 | Let's Encrypt |
| 9/8/2026, 6:29:51 PM | F | 42 | Let's Encrypt |
Score change insights · Last 90 days
Net change ↑ +31-
↑
9/9/2026 +31 F → CTLS version support regressedKey strength changed
FAQ
When does ai-db.science’s certificate expire?
ai-db.science’s certificate expires on 9/17/2026, in -47 days, issued by Let's Encrypt.
Is ai-db.science’s TLS configuration secure?
ai-db.science currently scores C (73/100). It negotiates TLS1.2 and does not enable HSTS.
Why did ai-db.science’s score change?
9/9/2026: +31 points — TLS version support regressed · Key strength changed