SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
planum-int.com
SSL/TLS Certificate
SSL/TLS Certificate for planum-int.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- planumint.s02.tempdomain.ch
- Valid from
- May 28, 2026
- Valid until
- Aug 26, 2026 (33 days remaining)
- Public key
- EC 384-bit
- Serial
- 06F5A0151D3BFE8A9D601D5DF69679F1A92F
- SHA-256 fingerprint
- E6:B2:7E:7B:36:A5:6F:8F:AE:54:AD:2D:77:23:65:F5:2C:E8:0F:01:E7:28:35:F5:D1:52:65:05:23:7F:2E:69
- Chain
- E7 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
Never get surprised by planum-int.com's certificate expiring
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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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