SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sigmund-hansen.com
SSL/TLS Certificate
SSL/TLS Certificate for sigmund-hansen.com
Valid- Issued by (CA)
- Gandi SAS
- Subject
- sigmund-hansen.com
- Valid from
- Dec 23, 2025
- Valid until
- Jan 20, 2027 (124 days remaining)
- Public key
- EC 256-bit
- Serial
- 04DE2450A150A000A7876292090CD7AF
- SHA-256 fingerprint
- EB:A0:FD:E0:08:F4:2B:0A:33:E1:37:1D:11:37:58:EB:09:8A:45:1F:7C:CD:34:F8:A2:54:A6:C1:71:0A:6C:59
- Chain
- GandiCert → DigiCert Global Root 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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This is today's certificate. Turn on monitoring and we'll watch sigmund-hansen.com continuously, notifying you the moment anything moves across all three signals:
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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