SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for shan-lan.com.tw

Valid
Issued by (CA)
Let's Encrypt
Subject
www.shan-lan.com.tw
Valid from
Oct 2, 2026
Valid until
Dec 31, 2026 (59 days remaining)
Public key
EC 256-bit
Serial
0550B1EBF4BC64A0468F4BA9E21BEEABEEF2
SHA-256 fingerprint
18:BF:A4:58:FB:C4:BB:B6:3F:04:59:F8:AA:02:9B:66:0B:17:95:5A:82:AC:E1:99:95:13:10:E9:28:C9:28:79
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
shan-lan.com.tw, www.shan-lan.com.tw

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 11, 2026.

Never get surprised by shan-lan.com.tw's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch shan-lan.com.tw continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.