SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
the3-dns.com
SSL/TLS Certificate
SSL/TLS Certificate for the3-dns.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- the3-dns.com
- Valid from
- Jun 12, 2026
- Valid until
- Sep 10, 2026 (43 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 057685498DFBECEE776FE8F2FEB568194BFC
- SHA-256 fingerprint
- 4F:5C:F1:4A:0E:78:2C:C3:EC:F3:E7:4E:E2:6E:6B:35:E1:E2:A2:4B:C1:E4:A0:77:24:75:1D:2F:F9:2B:B6:AB
- Chain
- YR1 → 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 the3-dns.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch the3-dns.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.