SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-18-156-66-84.eu-central-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-18-156-66-84.eu-central-1.compute.amazonaws.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- ns1.ns-serv.de
- Valid from
- Apr 3, 2020
- Valid until
- Jul 2, 2020 (expired 2326 days ago)
- Public key
- RSA 2048-bit
- Serial
- 03692338A3FCFBBC52727084D200E5F75519
- SHA-256 fingerprint
- DE:94:75:CC:C6:A5:EE:A5:9E:2C:79:CE:33:16:9C:5D:6B:A5:A1:DF:C0:88:6E:F3:98:91:01:0B:B2:2B:DF:9D
- Chain
- Let's Encrypt Authority X3
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 Oct 3, 2026.
Never get surprised by ec2-18-156-66-84.eu-central-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-18-156-66-84.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, CNAME, TXT 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.