SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ktp-navigator.org
SSL/TLS Certificate
SSL/TLS Certificate for ktp-navigator.org
Untrusted chain- Issued by (CA)
- Deutsche Telekom Security GmbH
- Subject
- *.ktp-navigator.org
- Valid from
- Jun 15, 2026
- Valid until
- Dec 29, 2026 (134 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 2F6585E78C8CE45984BB4778CCD49A00
- SHA-256 fingerprint
- 9D:6C:1C:6A:6C:1C:41:7B:D2:A5:49:B5:15:4C:A9:C6:18:C7:7A:74:6D:B3:43:97:B4:33:7A:CB:AF:E3:8A:BA
- Chain
- —
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 26, 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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