SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
leanos-app.com
SSL/TLS Certificate
SSL/TLS Certificate for leanos-app.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- leanos-app.com
- Valid from
- Sep 11, 2026
- Valid until
- Dec 10, 2026 (80 days remaining)
- Public key
- EC 256-bit
- Serial
- 0630BB832E076FEA1FD7FF17EEAD0D704FFC
- SHA-256 fingerprint
- AA:AC:A5:90:A5:95:55:DA:BE:44:F9:7D:1B:CB:EC:B9:8E:A2:0C:EF:EE:08:5E:60:42:EA:2B:0D:F1:B7:DB:4A
- Chain
- YE2 → Root YE → ISRG Root X2 → 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 leanos-app.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch leanos-app.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.