SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
act-b.com
SSL/TLS Certificate
SSL/TLS Certificate for act-b.com
Valid- Issued by (CA)
- Gandi SAS
- Subject
- act-b.com
- Valid from
- Sep 19, 2026
- Valid until
- Apr 5, 2027 (185 days remaining)
- Public key
- EC 256-bit
- Serial
- 0F32C4E1E77060D7A16A6825467A2AF9
- SHA-256 fingerprint
- 03:F6:34:8C:9E:38:24:CA:DF:DA:3D:6A:E5:8C:89:81:A4:CA:95:F0:2B:EA:16:58:4B:90:2F:52:0F:07:4F:67
- Chain
- GandiCert → DigiCert Global Root G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by act-b.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch act-b.com 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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