SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
universokayros.com
SSL/TLS Certificate
SSL/TLS Certificate for universokayros.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- universokayros.com
- Valid from
- Sep 13, 2026
- Valid until
- Dec 12, 2026 (52 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05FC92D4233FD84EB1B4823769299374B50C
- SHA-256 fingerprint
- AF:C3:E0:78:19:F0:B1:FF:11:AC:8C:D4:D9:F9:3B:33:D7:B4:0E:BF:6F:86:D9:53:6A:C1:8C:6D:E8:74:E0:D4
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
This certificate has been served since Sep 28, 2026.
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Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT 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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