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 kjarr.is
Valid- Issued by (CA)
- Google Trust Services
- Subject
- kjarr.is
- Valid from
- Jul 31, 2026
- Valid until
- Oct 29, 2026 (35 days remaining)
- Public key
- EC 256-bit
- Serial
- FE19AA4F9A6A4E98137264AEB808B18D
- SHA-256 fingerprint
- 6F:13:7E:68:93:CE:BB:03:B8:72:39:71:7B:4B:56:AA:37:83:50:04:7C:EB:64:E2:37:1B:FB:9E:BE:32:81:59
- Chain
- WE1 → GTS Root R4
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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