SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zarzadzanie-expert.pl
SSL/TLS Certificate
SSL/TLS Certificate for zarzadzanie-expert.pl
Valid- Issued by (CA)
- nazwa.pl Sp. z o.o.
- Subject
- zarzadzanie-expert.pl
- Valid from
- Jun 3, 2026
- Valid until
- Dec 2, 2026 (22 days remaining)
- Public key
- EC 384-bit
- Serial
- 1BDED26A9DCD2FB5F0305CB1530285DD
- SHA-256 fingerprint
- E2:F9:94:3A:9B:72:8D:B3:B9:C7:21:BD:DC:49:99:DC:3A:CE:28:6C:86:23:E8:2E:92:50:49:B8:02:FF:55:CD
- Chain
- nazwaSSL DV TLS G2 E29 CA → Certum EC-384 CA → Certum Trusted Network CA
Certificate Authority Authorization (CAA)
CAA restricts issuance to certum.pl, letsencrypt.org; we couldn't map the serving CA (nazwa.pl Sp. z o.o.) to one of these identifiers.
This certificate has been served since Sep 30, 2026.
Never get surprised by zarzadzanie-expert.pl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch zarzadzanie-expert.pl continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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