SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bbu-edukacja.pl
SSL/TLS Certificate
SSL/TLS Certificate for bbu-edukacja.pl
Valid- Issued by (CA)
- Google Trust Services
- Subject
- bbu-edukacja.pl
- Valid from
- Jul 23, 2026
- Valid until
- Oct 21, 2026 (73 days remaining)
- Public key
- EC 256-bit
- Serial
- FE728A7857FEE0C21322286DFBE7D455
- SHA-256 fingerprint
- A3:E2:D9:02:5F:73:76:CE:B2:94:15:07:A6:42:70:D5:31:A2:72:E4:9D:C3:DD:C7:D8:ED:F7:DC:9A:84:AE:F2
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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, 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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