SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-18-236-213-84.us-west-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-18-236-213-84.us-west-2.compute.amazonaws.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- alitrope.com
- Valid from
- Apr 14, 2025
- Valid until
- Jul 13, 2025 (expired 484 days ago)
- Public key
- RSA 2048-bit
- Serial
- 05B92798A2FB08AA0092AD83F38E3ED1A2C2
- SHA-256 fingerprint
- F0:EA:3A:96:39:B5:26:37:EC:F9:46:11:95:ED:D4:5B:03:54:10:E0:D9:72:67:C4:4C:E2:86:D8:B5:22:C2:C9
- 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 ec2-18-236-213-84.us-west-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-18-236-213-84.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.