SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bit-tech.dk
SSL/TLS Certificate
SSL/TLS Certificate for bit-tech.dk
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- bit-tech.dk
- Valid from
- Jun 25, 2026
- Valid until
- Sep 23, 2026 (12 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0593DE65B5AFE39F3C3757DFF08B8C5B572A
- SHA-256 fingerprint
- 06:F9:C0:14:88:6B:1A:32:18:76:75:04:40:B4:D4:F6:A7:64:E0:2C:E1:41:68:73:CE:56:4E:71:8A:06:28:C0
- 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 11, 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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