SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

uj.edu.pl

SSL/TLS Certificate

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

SSL/TLS Certificate for uj.edu.pl

Valid
Issued by (CA)
Hellenic Academic and Research Institutions CA
Subject
almamater.uj.edu.pl
Valid from
Jul 22, 2026
Valid until
Feb 6, 2027 (190 days remaining)
Public key
RSA 2048-bit
Serial
40210A71FA918D2A4D023AE6C64F80EB
SHA-256 fingerprint
17:63:13:1F:3A:A0:0D:9C:39:71:54:48:45:55:84:3A:BB:4B:DD:A8:A4:51:30:7B:AA:92:65:9C:F4:BA:07:F3
Chain
GEANT TLS RSA 1 → HARICA TLS RSA Root CA 2021 → Hellenic Academic and Research Institutions RootCA 2015
Subject Alternative Names (81)
almamater.uj.edu.pl, arsdocendi.uj.edu.pl, bezpieczny-student.uj.edu.pl, biologia.uj.edu.pl, bip.uj.edu.pl, biurokarier.uj.edu.pl, bj.uj.edu.pl, cawp.uj.edu.pl, chemia.uj.edu.pl, cn.uj.edu.pl, dis.uj.edu.pl, dmws.uj.edu.pl, doktoranci.uj.edu.pl, don.uj.edu.pl, ds.uj.edu.pl, dso.uj.edu.pl, dui.uj.edu.pl, dwm.uj.edu.pl, dydaktyka.uj.edu.pl, econ.uj.edu.pl, eduroam.uj.edu.pl, en.uj.edu.pl, etnologia.uj.edu.pl, fais.uj.edu.pl, filg.uj.edu.pl, filozofia.uj.edu.pl, historia.uj.edu.pl, historyczny.uj.edu.pl, iaisp.uj.edu.pl, ibhp.uj.edu.pl, if.uj.edu.pl, ihs.uj.edu.pl, ii.uj.edu.pl, im.uj.edu.pl, inp.uj.edu.pl, iod.uj.edu.pl, ips.uj.edu.pl, isp.uj.edu.pl, jcj.uj.edu.pl, konferencje.uj.edu.pl, ksztalcenie.uj.edu.pl, kultura.uj.edu.pl, kwestura.uj.edu.pl, maius.uj.edu.pl, matinf.uj.edu.pl, mcb.uj.edu.pl, media.uj.edu.pl, mish.uj.edu.pl, nauka.uj.edu.pl, ogrod.uj.edu.pl, orient.uj.edu.pl, pedagogika.uj.edu.pl, phils.uj.edu.pl, plschool.uj.edu.pl, podyplomowe.uj.edu.pl, polishstudies.uj.edu.pl, polonistyka.uj.edu.pl, pomocit.uj.edu.pl, portal.uj.edu.pl, promocja.uj.edu.pl, przetargi.uj.edu.pl, psychologia.uj.edu.pl, rekrutacja.uj.edu.pl, ru.uj.edu.pl, senat.uj.edu.pl, smp.uj.edu.pl, socjologia.uj.edu.pl, studiuje.uj.edu.pl, swfis.uj.edu.pl, synchrotron.uj.edu.pl, uj.edu.pl, usos.uj.edu.pl, utw.uj.edu.pl, wb.uj.edu.pl, wbbib.uj.edu.pl, welcome.uj.edu.pl, wgig.uj.edu.pl, wpia.uj.edu.pl, wsmip.uj.edu.pl, www.uj.edu.pl, wzks.uj.edu.pl

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by uj.edu.pl's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch uj.edu.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, 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.