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 he-ja.nl
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- he-ja.nl
- Valid from
- Feb 25, 2026
- Valid until
- Mar 18, 2027 (228 days remaining)
- Public key
- RSA 2048-bit
- Serial
- CA112866D3DE1699AC99193243612859
- SHA-256 fingerprint
- EA:80:E5:44:53:65:2A:BB:45:20:33:05:DA:BA:B7:47:38:6F:59:F9:1E:E5:79:A4:E5:67:C6:69:1F:49:B9:24
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by he-ja.nl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch he-ja.nl 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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