SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hpc-realschule.com
SSL/TLS Certificate
SSL/TLS Certificate for hpc-realschule.com
Hostname mismatch- Issued by (CA)
- Sectigo Limited
- Subject
- academy-languages.de
- Valid from
- Sep 27, 2025
- Valid until
- Oct 28, 2026 (13 days remaining)
- Public key
- RSA 2048-bit
- Serial
- EBF3681B8D500C5C7520E7FF0510D0ED
- SHA-256 fingerprint
- F1:97:46:69:7C:12:F6:1B:70:82:53:80:62:6F:49:BE:E3:C4:4A:EE:5A:EF:4E:F4:F1:13:62:6C:B4:AD:55:4A
- 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.
This certificate has been served since Jul 27, 2026.
Never get surprised by hpc-realschule.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch hpc-realschule.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.