SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
proprietary-data.com
SSL/TLS Certificate
SSL/TLS Certificate for proprietary-data.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- proprietary-data.com
- Valid from
- Sep 6, 2026
- Valid until
- Dec 5, 2026 (59 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05A7074D9060E7BEFFE5762980573ED96C07
- SHA-256 fingerprint
- 75:AD:F7:D0:25:61:FD:28:9D:40:E8:BB:F8:CC:7B:12:9F:C6:8D:98:1A:E2:80:F5:3B:FA:30:C9:EB:76:2A:84
- Chain
- YR2 → Root YR → ISRG Root X1
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 4, 2026.
Never get surprised by proprietary-data.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch proprietary-data.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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