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 gysi.com
Expired- Issued by (CA)
- DigiCert Inc
- Subject
- *.netjump.ch
- Valid from
- Sep 8, 2015
- Valid until
- Sep 12, 2017 (expired 3236 days ago)
- Public key
- RSA 2048-bit
- Serial
- 02A6BC0ECD115A614FD0C59A3A2ADC3A
- SHA-256 fingerprint
- 45:51:69:D1:2E:8F:DA:21:C0:63:46:30:2C:99:AB:AD:A2:68:06:84:E8:18:50:E0:99:C4:23:0A:03:01:B6:0F
- Chain
- DigiCert SHA2 Secure Server CA → DigiCert Global Root CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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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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