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 d-dns.ch
Hostname mismatch- Issued by (CA)
- DigiCert Inc
- Subject
- *.into.ch
- Valid from
- Feb 20, 2026
- Valid until
- Mar 13, 2027 (124 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 09528B44BB796C22E2C3CE85DECF92FC
- SHA-256 fingerprint
- C4:C4:10:6F:BD:7B:E3:14:36:88:2D:9F:5C:0D:75:AF:39:0C:7E:44:3B:8D:C0:FB:5F:FE:95:B8:4B:23:3F:8B
- Chain
- RapidSSL TLS RSA CA G1 → DigiCert Global Root G2
Certificate Authority Authorization (CAA)
The serving CA (DigiCert Inc) is authorized by this domain's CAA records (digicert.com).
Never get surprised by d-dns.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch d-dns.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, CNAME, TXT 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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