SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dr-performance.de
SSL/TLS Certificate
SSL/TLS Certificate for dr-performance.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.dr-performance.de
- Valid from
- Aug 18, 2026
- Valid until
- Feb 28, 2027 (135 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 250FE303002112DE56000FED7DFB0469
- SHA-256 fingerprint
- 71:3D:57:FE:6F:89:1E:4E:E6:53:F4:64:4C:54:9F:31:05:76:C6:79:D3:4A:4E:58:59:03:E0:A1:A1:BC:7F:FD
- 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 dr-performance.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch dr-performance.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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