SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
tieto-velju.fi
SSL/TLS Certificate
SSL/TLS Certificate for tieto-velju.fi
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- tieto-velju.fi
- Valid from
- Oct 6, 2026
- Valid until
- Jan 4, 2027 (62 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06DA79C2CFFE00694505A0DC04EA3BED1406
- SHA-256 fingerprint
- 43:37:B5:E3:48:62:17:87:06:87:E3:0B:E5:BF:55:3C:59:B1:3F:EA:F5:6F:53:8E:5D:EE:55:9F:01:07:ED:AA
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
We've observed 1 previous certificate for this host. This certificate has been served since Oct 9, 2026.
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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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