SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-35-85-201-112.us-west-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-35-85-201-112.us-west-2.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- ucima.mx
- Valid from
- Sep 24, 2026
- Valid until
- Dec 23, 2026 (46 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 068542DCD0B0298CB7E0629E724F0CD069AF
- SHA-256 fingerprint
- 7C:46:D7:32:12:5F:FA:60:FA:BA:6A:22:0F:3D:EB:B5:EA:5F:A2:BF:E3:47:7C:5B:10:95:1E:A5:33:D6:34:D7
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-35-85-201-112.us-west-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-35-85-201-112.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.