SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
colomina.cat
SSL/TLS Certificate
SSL/TLS Certificate for colomina.cat
Self-signed- Issued by (CA)
- ce2020021817002.dnssw.net
- Subject
- ce2020021817002.dnssw.net
- Valid from
- Feb 18, 2020
- Valid until
- Feb 15, 2030 (1235 days remaining)
- Public key
- RSA 2048-bit
- Serial
- C7325A7CCFE19955
- SHA-256 fingerprint
- A9:AB:E9:F2:DD:81:A5:CA:9B:82:3E:AC:E0:A4:89:9A:0F:0D:67:6D:D1:00:79:46:91:63:9B:E2:96:D7:75:16
- Chain
- ce2020021817002.dnssw.net
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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