SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ian-mckenna.com
SSL/TLS Certificate
SSL/TLS Certificate for ian-mckenna.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- —
- Valid from
- Oct 24, 2026
- Valid until
- Dec 8, 2026 (30 days remaining)
- Public key
- EC 256-bit
- Serial
- 06569E792F3F81A61775229022F33A199FDB
- SHA-256 fingerprint
- 06:30:49:E1:10:E9:F8:70:BF:DD:78:2B:EA:B3:EB:65:4E:F5:B5:55:B4:11:C1:60:95:AA:27:E3:D6:9E:A4:76
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
We've observed 1 previous certificate for this host. This certificate has been served since Nov 5, 2026.
Never get surprised by ian-mckenna.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ian-mckenna.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, CNAME, TXT 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.