SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
smplab-unp.sch.id
SSL/TLS Certificate
SSL/TLS Certificate for smplab-unp.sch.id
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.smplab-unp.sch.id
- Valid from
- Oct 6, 2026
- Valid until
- Jan 4, 2027 (51 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0609A74C9BB30FD8ACFD9FADD433CB2ABA5C
- SHA-256 fingerprint
- 45:A7:9C:8B:99:C4:5A:68:20:47:36:E2:F0:5C:CE:23:42:3E:13:F8:F3:83:9E:6D:AD:5D:46:25:47:DA:F2:EB
- 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.
We've observed 3 previous certificates for this host. This certificate has been served since Oct 31, 2026.
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Uptime
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DNS changes
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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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