SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
pasternok.org
SSL/TLS Certificate
SSL/TLS Certificate for pasternok.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- hetzner1.pasternok.org
- Valid from
- Jul 13, 2026
- Valid until
- Oct 11, 2026 (65 days remaining)
- Public key
- EC 256-bit
- Serial
- 05C97F4F2ABE6918BCAC2E1EBB88384271C6
- SHA-256 fingerprint
- 89:78:CB:9A:BC:4B:04:83:65:E4:9C:7F:E0:C4:3E:54:D7:03:B8:F5:95:35:9D:1F:18:EA:89:11:6C:FC:DD:89
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
Never get surprised by pasternok.org's certificate expiring
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Uptime
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DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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