SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
app-unit.com
SSL/TLS Certificate
SSL/TLS Certificate for app-unit.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- app-unit.com
- Valid from
- Sep 30, 2026
- Valid until
- Dec 29, 2026 (89 days remaining)
- Public key
- EC 256-bit
- Serial
- 05FF599C5D474C33BF27944ABA8D927818B9
- SHA-256 fingerprint
- B6:A5:3D:3C:E9:FF:F7:C0:1F:30:87:B7:F1:95:EA:8C:EC:2C:10:4A:05:61:62:62:50:18:EB:24:3B:60:1C:70
- Chain
- YE1 → 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 app-unit.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch app-unit.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.