SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
stefan-plank.com
SSL/TLS Certificate
SSL/TLS Certificate for stefan-plank.com
Valid- Issued by (CA)
- Google Trust Services
- Subject
- stefan-plank.com
- Valid from
- Aug 29, 2026
- Valid until
- Nov 27, 2026 (74 days remaining)
- Public key
- EC 256-bit
- Serial
- EE63E707DA76D9861327A025C01DF7A5
- SHA-256 fingerprint
- 43:57:12:25:3A:2C:5A:09:32:E7:B7:46:80:DF:74:CB:A8:54:E8:0D:6F:60:3C:3C:28:02:D3:82:EF:A3:0C:DB
- Chain
- WE1 → GTS Root R4
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 12, 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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