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 u4ia.nl
Valid- Issued by (CA)
- Google Trust Services
- Subject
- u4ia.nl
- Valid from
- Jul 29, 2026
- Valid until
- Oct 27, 2026 (77 days remaining)
- Public key
- EC 256-bit
- Serial
- F0ED458F47E47D960EA62A3DE9A7E619
- SHA-256 fingerprint
- 59:CE:5F:1B:D2:89:4C:17:F3:D9:9C:91:E3:00:E8:B6:87:59:33:A3:8B:6C:77:1D:43:3A:47:73:A6:92:B1:F1
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Jul 27, 2026.
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Uptime
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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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