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 dziky.pl
Hostname mismatch- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- *.wise.pl
- Valid from
- Jun 29, 2026
- Valid until
- Jan 14, 2027 (130 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 772676D0869345B2BE65C8B1006EB5D9
- SHA-256 fingerprint
- 42:85:7C:34:AB:5B:92:75:9C:FB:3B:3C:56:DA:AC:3F:86:90:B9:34:3D:35:9D:3B:B0:DB:74:E8:5E:25:DF:30
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted Root CA → Certum Trusted Network CA
Certificate Authority Authorization (CAA)
CAA restricts issuance to letsencrypt.org; we couldn't map the serving CA (Asseco Data Systems S.A.) to one of these identifiers.
This certificate has been served since Aug 2, 2026.
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Uptime
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DNS changes
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TLS certificate
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