SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
heal-u.org
SSL/TLS Certificate
SSL/TLS Certificate for heal-u.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- heal-u.org
- Valid from
- Sep 13, 2026
- Valid until
- Dec 12, 2026 (85 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 051A661882EF898E86FBB4CA1EF7F7961AF1
- SHA-256 fingerprint
- 14:28:2A:31:E7:54:E4:7D:D4:9E:BE:3E:84:23:E4:85:B4:D9:89:75:74:1E:9B:20:9C:7E:B7:2B:66:8A:0A:12
- Chain
- YR2 → 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 heal-u.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch heal-u.org 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.