SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ht-support.de
SSL/TLS Certificate
SSL/TLS Certificate for ht-support.de
Expired- Issued by (CA)
- DigiCert Inc
- Subject
- *.ht-support.de
- Valid from
- Jun 17, 2020
- Valid until
- Jun 25, 2022 (expired 1501 days ago)
- Public key
- RSA 2048-bit
- Serial
- 06B0630D0A909F57C21740D1297C7C92
- SHA-256 fingerprint
- DB:1B:E1:5E:44:33:D8:FF:C3:15:7C:2C:9B:E5:75:68:A6:4D:19:ED:FD:CB:79:32:82:2E:23:1B:F4:CF:EA:9A
- Chain
- Thawte RSA CA 2018 → DigiCert Global Root CA
Certificate Authority Authorization (CAA)
The serving CA (DigiCert Inc) is authorized by this domain's CAA records (digicert.com).
Never get surprised by ht-support.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ht-support.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.