SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-54-151-104-87.us-west-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-54-151-104-87.us-west-1.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Sectigo Limited
- Subject
- consumerthree.mercer.com
- Valid from
- Jan 7, 2026
- Valid until
- Dec 22, 2026 (150 days remaining)
- Public key
- RSA 3072-bit
- Serial
- C6F5B42A2DB14066F984A6B436F4BCA4
- SHA-256 fingerprint
- 12:A6:5E:8E:71:91:39:EE:C5:00:0F:EB:74:69:39:49:57:5B:50:3E:8C:0D:F3:93:EA:BF:CF:05:44:5B:0E:83
- Chain
- Sectigo Public Server Authentication CA OV R36 → Sectigo Public Server Authentication Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-54-151-104-87.us-west-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-54-151-104-87.us-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.