SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
act-a.org
SSL/TLS Certificate
SSL/TLS Certificate for act-a.org
Valid- Issued by (CA)
- Google Trust Services
- Subject
- act-a.org
- Valid from
- Sep 5, 2026
- Valid until
- Dec 4, 2026 (50 days remaining)
- Public key
- EC 256-bit
- Serial
- 0B10EDFFDF652D4213F54D0EDEE1EC35
- SHA-256 fingerprint
- C0:65:36:15:96:BF:BD:6F:D6:C3:80:0D:4D:8F:D9:76:84:C9:04:A7:EC:5C:35:9F:14:95:A1:10:8F:A3:27:E2
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Oct 8, 2026.
Never get surprised by act-a.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch act-a.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.