SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
c-act.org
SSL/TLS Certificate
SSL/TLS Certificate for c-act.org
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.c-act.org
- Valid from
- Nov 8, 2025
- Valid until
- Nov 22, 2026 (81 days remaining)
- Public key
- RSA 2048-bit
- Serial
- AD35D5838AC416C837BC4DD4E84157CB
- SHA-256 fingerprint
- 6F:D9:54:7E:76:D8:79:D8:6D:0C:F1:06:0E:A3:0A:DE:8A:DC:F3:3B:ED:71:AB:F9:AD:07:A6:AF:C7:6B:76:4F
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by c-act.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch c-act.org 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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