SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
derek-turner.com
SSL/TLS Certificate
SSL/TLS Certificate for derek-turner.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- derek-turner.com
- Valid from
- Jul 9, 2026
- Valid until
- Oct 7, 2026 (54 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 050BF6DD95006B8901DD8BF1FD4B49E33AA2
- SHA-256 fingerprint
- 08:F3:12:87:C3:C0:8A:FC:E9:43:F5:EF:23:3E:30:95:F4:4E:6B:C0:05:67:D4:F3:A8:1F:CC:09:4B:D4:0C:85
- 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 Jul 26, 2026.
Never get surprised by derek-turner.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch derek-turner.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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