SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
just-run.app
SSL/TLS Certificate
SSL/TLS Certificate for just-run.app
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- just-run.app
- Valid from
- Oct 30, 2026
- Valid until
- Jan 28, 2027 (84 days remaining)
- Public key
- EC 256-bit
- Serial
- 052162BB42FA9AEE3711C8655F133C7EA705
- SHA-256 fingerprint
- 10:84:8C:00:94:AE:AA:E6:58:A5:38:7D:02:D8:E8:DA:87:02:2B:6A:BF:5F:DC:72:47:A8:9C:84:EE:54:60:EA
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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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.
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