SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
open-investigation.com
SSL/TLS Certificate
SSL/TLS Certificate for open-investigation.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- projectproductions.com
- Valid from
- May 24, 2026
- Valid until
- Aug 22, 2026 (31 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0570DA0684997C6C40879BA417277EB2BCC5
- SHA-256 fingerprint
- F3:06:9E:C8:49:37:CE:68:7E:E4:89:C9:C1:5A:45:30:E8:CB:7B:87:44:7D:2F:49:F6:43:88:21:CE:94:4E:4E
- Chain
- R13 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by open-investigation.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch open-investigation.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.