SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for g-dna.org

Valid
Issued by (CA)
Let's Encrypt
Subject
g-dna.org
Valid from
Oct 2, 2026
Valid until
Dec 31, 2026 (86 days remaining)
Public key
RSA 2048-bit
Serial
06DA65374D5DBE94AFC7D1F7A31793BA6177
SHA-256 fingerprint
1B:DF:BB:FC:F7:AC:F9:C9:D0:9A:97:A7:3E:DF:F7:EA:B3:E6:58:E5:F1:E2:1D:C3:AD:48:30:E8:B3:1A:F0:30
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (1)
g-dna.org

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 Oct 3, 2026.

Never get surprised by g-dna.org's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch g-dna.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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.