SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
email-genius.com
SSL/TLS Certificate
SSL/TLS Certificate for email-genius.com
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- www.opensourceserver.io
- Valid from
- Aug 9, 2026
- Valid until
- Nov 7, 2026 (63 days remaining)
- Public key
- EC 256-bit
- Serial
- 059F4627E8F3C0631CD6B994F1BC654047EC
- SHA-256 fingerprint
- 35:75:85:12:6E:40:63:97:D1:DD:FF:E0:D6:78:02:1C:EF:72:74:5C:CF:44:80:B7:6A:83:C4:F7:61:2D:A0:67
- 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.
This certificate has been served since Jul 28, 2026.
Never get surprised by email-genius.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch email-genius.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.