SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
45-79-117-142.ip.linodeusercontent.com
SSL/TLS Certificate
SSL/TLS Certificate for 45-79-117-142.ip.linodeusercontent.com
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- attiksarchitecture.com
- Valid from
- Sep 28, 2026
- Valid until
- Dec 27, 2026 (52 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0642778284B18D385B7A18B83D4B14075D64
- SHA-256 fingerprint
- 8C:DC:7C:AD:A8:78:C5:F3:7C:EE:52:15:11:BF:AE:42:07:8E:0E:DB:59:16:45:8D:5E:D9:C4:85:77:80:EE:0D
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by 45-79-117-142.ip.linodeusercontent.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch 45-79-117-142.ip.linodeusercontent.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.