SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for mib-1.dk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sits.dk
- Valid from
- Aug 30, 2026
- Valid until
- Nov 28, 2026 (84 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05EFB01470AB6FC098A47496D905E0B4F9DD
- SHA-256 fingerprint
- 1B:AC:06:87:D2:D9:85:D1:6F:BC:E6:07:C9:B0:E5:8A:39:3D:6B:8A:35:25:85:F6:C4:FD:89:4C:64:58:50:EB
- Chain
- YR2 → 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 4, 2026.
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This is today's certificate. Turn on monitoring and we'll watch mib-1.dk continuously, notifying you the moment anything moves across all three signals:
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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