SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
tek-test.no
SSL/TLS Certificate
SSL/TLS Certificate for tek-test.no
Valid- Issued by (CA)
- Certainly
- Subject
- tek-test.no
- Valid from
- Sep 11, 2026
- Valid until
- Oct 11, 2026 (22 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 785D74402EA901215F2E0E59A6012BC22BBA
- SHA-256 fingerprint
- D4:3A:8C:AD:33:0C:06:16:E0:C0:FC:47:13:51:39:75:7C:FE:86:CD:45:A1:F4:3C:30:93:9C:0B:1F:BB:1F:E6
- Chain
- Certainly Intermediate R1 → Starfield Root Certificate Authority - G2
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 28, 2026.
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Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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