SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ok-kompetenz.com
SSL/TLS Certificate
SSL/TLS Certificate for ok-kompetenz.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ok-kompetenz.com
- Valid from
- Oct 17, 2026
- Valid until
- Jan 15, 2027 (86 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06640BB274CA3DB30AB166683FBF954D9CBA
- SHA-256 fingerprint
- 56:25:F5:B0:47:13:2A:E1:27:01:74:66:C0:28:91:25:6C:F9:19:DB:B8:07:C3:18:E8:22:D7:BB:CA:3F:2A:70
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 3, 2026.
Never get surprised by ok-kompetenz.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ok-kompetenz.com continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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