SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
okkur-foundation.org
SSL/TLS Certificate
SSL/TLS Certificate for okkur-foundation.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- okkur-foundation.org
- Valid from
- Jun 24, 2026
- Valid until
- Sep 22, 2026 (54 days remaining)
- Public key
- EC 256-bit
- Serial
- 0530A5E7F1056F26D0CDCB530083C6A66423
- SHA-256 fingerprint
- 2C:44:60:B7:58:F0:FE:D0:83:A3:4E:EC:16:BC:D8:4B:77:F7:B0:AD:DA:35:04:21:2E:9D:15:5E:33:B7:F1:97
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
Never get surprised by okkur-foundation.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch okkur-foundation.org 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, 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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