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 3rd-d.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 3rd-dimension.ch
- Valid from
- Jul 8, 2026
- Valid until
- Oct 6, 2026 (30 days remaining)
- Public key
- EC 256-bit
- Serial
- 0582B7182840634D71D01B3C593E6173FD81
- SHA-256 fingerprint
- 20:07:C7:19:44:5E:EE:B4:95:FB:B6:AE:C9:44:D9:46:0D:CA:9F:34:C7:7D:89:C0:37:31:2E:22:13:CD:37:A9
- 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.
Never get surprised by 3rd-d.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch 3rd-d.ch 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.
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