SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-52-51-220-11.eu-west-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-52-51-220-11.eu-west-1.compute.amazonaws.com
Self-signed- Issued by (CA)
- TRAEFIK DEFAULT CERT
- Subject
- TRAEFIK DEFAULT CERT
- Valid from
- Jul 23, 2026
- Valid until
- Jul 23, 2027 (364 days remaining)
- Public key
- RSA 2048-bit
- Serial
- FB689C02F96249210BBC2ADCD429681B
- SHA-256 fingerprint
- 17:CF:BD:56:4F:44:99:67:36:28:38:C2:79:B8:0E:A3:FC:89:FD:ED:28:2A:BF:C8:79:EA:73:70:C5:70:E8:9D
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-52-51-220-11.eu-west-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-52-51-220-11.eu-west-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.