SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
koningkarel12.nl
SSL/TLS Certificate
SSL/TLS Certificate for koningkarel12.nl
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- www.koningkarel12.nl
- Valid from
- Feb 22, 2026
- Valid until
- Mar 15, 2027 (130 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 8BC2EC0D4A56DE427F1ADB0462F3604A
- SHA-256 fingerprint
- F1:DE:E7:5B:66:F9:EE:E4:3D:FD:75:FB:72:17:84:4C:DA:F3:14:B8:6C:18:E5:E2:C1:53:37:CD:66:C2:60:EB
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by koningkarel12.nl's certificate expiring
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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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