SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kt-dienstleistungen.com
SSL/TLS Certificate
SSL/TLS Certificate for kt-dienstleistungen.com
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- kt-dienstleistungen.com
- Valid from
- Sep 27, 2026
- Valid until
- Mar 26, 2027 (136 days remaining)
- Public key
- RSA 2048-bit
- Serial
- E72D8229878558A65A01A4B225382ACC
- SHA-256 fingerprint
- 33:05:2B:F0:B9:A0:1B:0E:46:26:DB:B5:38:CB:5C:82:4B:6B:0D:A1:6F:94:2B:97:ED:75:0E:D5:2A:22:80:FF
- 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.
This certificate has been served since Oct 7, 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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