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 i-teq.nl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- altioz.nl
- Valid from
- Aug 13, 2026
- Valid until
- Nov 11, 2026 (26 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 064F03477B506CD528FE40C59DD8C02065F9
- SHA-256 fingerprint
- 18:C9:6B:1A:DB:C4:57:BE:14:14:2C:EB:A8:8A:6F:AB:ED:09:C7:C6:5F:0A:44:ED:EB:78:4B:3C:FB:F9:55:52
- 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 24, 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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