SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-54-93-58-104.eu-central-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-54-93-58-104.eu-central-1.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- k12.wok-cloud.com
- Valid from
- Jun 2, 2026
- Valid until
- Aug 31, 2026 (37 days remaining)
- Public key
- EC 256-bit
- Serial
- 05968A545D3FD182231F16299ADC0387CED6
- SHA-256 fingerprint
- 84:7A:3C:E7:7C:18:8D:98:FE:A4:0A:A6:13:11:E8:BB:25:D6:69:71:09:E0:68:BA:E0:8B:58:AB:B6:BB:13:BA
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
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 24, 2026.
Never get surprised by ec2-54-93-58-104.eu-central-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-54-93-58-104.eu-central-1.compute.amazonaws.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.