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 hjwr.de
Untrusted chain- Issued by (CA)
- Let's Encrypt
- Subject
- hjwr.de
- Valid from
- May 14, 2026
- Valid until
- Aug 12, 2026 (8 days remaining)
- Public key
- EC 256-bit
- Serial
- 05C9F8DAF76FFC29F8E26E21037CEF5CFCD7
- SHA-256 fingerprint
- FC:24:68:8F:92:56:B0:66:5A:33:3F:B2:CE:12:53:FC:CB:C6:1E:6A:40:4C:42:BD:9C:57:A3:2F:B7:1F:0E:EA
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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This is today's certificate. Turn on monitoring and we'll watch hjwr.de 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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