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 zrc-sazu.si

Valid
Issued by (CA)
Let's Encrypt
Subject
zrc-sazu.si
Valid from
Jun 5, 2026
Valid until
Sep 3, 2026 (42 days remaining)
Public key
RSA 4096-bit
Serial
06A12A1360BA54BA707C3BE08A9D1A5D17EA
SHA-256 fingerprint
05:34:FF:8A:D0:AB:88:85:45:0D:40:B3:E4:88:02:AB:7F:08:D4:34:DD:D5:B6:DD:BC:78:4F:61:3B:4B:EF:92
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (30)
bijh.zrc-sazu.si, dmi.zrc-sazu.si, fi.zrc-sazu.si, fi2.zrc-sazu.si, giam.zrc-sazu.si, gni.zrc-sazu.si, iaps.zrc-sazu.si, ikss.zrc-sazu.si, ikz.zrc-sazu.si, isim.zrc-sazu.si, isjfr.zrc-sazu.si, isllv.zrc-sazu.si, isn2.zrc-sazu.si, iza2.zrc-sazu.si, izrk.zrc-sazu.si, izrkp.zrc-sazu.si, knjigarna.zrc-sazu.si, kras.zrc-sazu.si, mi.zrc-sazu.si, piir.zrc-sazu.si, rpb.zrc-sazu.si, rpmb.zrc-sazu.si, rpng.zrc-sazu.si, rpp.zrc-sazu.si, uifs.zrc-sazu.si, uprava.zrc-sazu.si, www.zrc-sazu.si, zalozba.zrc-sazu.si, zimk.zrc-sazu.si, zrc-sazu.si

Certificate Authority Authorization (CAA)

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

Never get surprised by zrc-sazu.si's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch zrc-sazu.si 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.