SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hei-light.com
SSL/TLS Certificate
SSL/TLS Certificate for hei-light.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- hei-light.com
- Valid from
- Sep 18, 2026
- Valid until
- Dec 17, 2026 (86 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05EDF7BF08B66AD94AA8C305D2DADD5C3273
- SHA-256 fingerprint
- 42:D5:BB:93:42:C8:81:DD:4F:AB:A3:65:6E:EB:C1:FC:03:85:63:4C:F2:59:15:0B:33:70:BA:6F:84:0D:14:31
- 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 hei-light.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch hei-light.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.