SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
matias-k.dk
SSL/TLS Certificate
SSL/TLS Certificate for matias-k.dk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- matias-k.dk
- Valid from
- Sep 5, 2026
- Valid until
- Dec 4, 2026 (85 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06E65F8584915B63847629CA67DA4F96BB2D
- SHA-256 fingerprint
- EA:EB:EF:FA:04:87:65:EC:E2:52:ED:9E:79:83:6A:DC:73:2D:6A:F7:D0:13:42:78:35:E9:92:21:25:F2:08:B3
- 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 Aug 30, 2026.
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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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