SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-54-69-131-228.us-west-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-54-69-131-228.us-west-2.compute.amazonaws.com
Self-signed- Issued by (CA)
- www.example.com
- Subject
- www.example.com
- Valid from
- Mar 6, 2017
- Valid until
- Mar 4, 2027 (111 days remaining)
- Public key
- RSA 2048-bit
- Serial
- C66A02FE8BA1A14A
- SHA-256 fingerprint
- 9B:20:BE:8B:E3:28:CE:49:25:F2:99:5D:26:E7:D1:A0:0B:0D:0E:FE:73:87:C0:B9:23:6D:DF:46:C3:E8:EE:53
- Chain
- www.example.com
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-54-69-131-228.us-west-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-54-69-131-228.us-west-2.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.