SSL/TLS Certificate Lookup

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

66-228-49-78.ip.linodeusercontent.com

SSL/TLS Certificate

SSL/TLS Certificate for 66-228-49-78.ip.linodeusercontent.com

Valid
Issued by (CA)
Let's Encrypt
Subject
70degrees.us
Valid from
Oct 15, 2026
Valid until
Jan 13, 2027 (67 days remaining)
Public key
EC 256-bit
Serial
05C7BC4FA2EE2D6B68F13E7DE00C9A4B7FC0
SHA-256 fingerprint
98:A0:DF:22:7A:D9:60:F8:61:49:1E:F5:D8:2D:92:E5:B4:92:F2:3C:AA:79:08:A2:3B:64:A6:00:7B:64:E5:CC
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
66-228-49-78.ip.linodeusercontent.com, 70degrees.us

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by 66-228-49-78.ip.linodeusercontent.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch 66-228-49-78.ip.linodeusercontent.com 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.