SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
linn-art.com
SSL/TLS Certificate
SSL/TLS Certificate for linn-art.com
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- linn-art.com
- Valid from
- Oct 13, 2025
- Valid until
- Nov 3, 2026 (43 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 815CE8CAB1073BA91939B3454518A69B
- SHA-256 fingerprint
- 3A:9F:0B:19:92:53:C1:E9:90:1C:11:6F:B3:3A:7D:8C:05:C6:E2:AD:03:0A:84:E7:02:DC:9C:D2:E6:28:32:5E
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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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