SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
thuis-onderwijs.com
SSL/TLS Certificate
SSL/TLS Certificate for thuis-onderwijs.com
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- 1ago.be
- Valid from
- Nov 3, 2026
- Valid until
- Feb 1, 2027 (88 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06C585958491FD4D601D51FCC2DC2C7D1ED6
- SHA-256 fingerprint
- 85:BC:83:59:53:BE:8B:84:AD:39:94:C8:48:BA:DF:5D:39:F9:23:F7:35:E3:33:3F:A6:8A:74:09:C1:2B:F2:78
- 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.
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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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