SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-100-21-86-112.us-west-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-100-21-86-112.us-west-2.compute.amazonaws.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- webmail.msturla.webdev.iyaserver.com
- Valid from
- Jul 15, 2025
- Valid until
- Oct 13, 2025 (expired 393 days ago)
- Public key
- RSA 2048-bit
- Serial
- 06D35967EBF2F6C525A1044CC2E8B5570B53
- SHA-256 fingerprint
- DE:A9:24:F5:AA:B8:3D:DA:51:17:14:F1:CF:BE:1A:80:6C:98:71:AE:09:25:16:32:84:C0:D7:AE:C2:C9:8C:62
- Chain
- R11 → 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 ec2-100-21-86-112.us-west-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-100-21-86-112.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.