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 hgs-hire.de

Expiring soon
Issued by (CA)
Let's Encrypt
Subject
fias.uni-frankfurt.de
Valid from
May 6, 2026
Valid until
Aug 4, 2026 (6 days remaining)
Public key
RSA 4096-bit
Serial
062D94F20450D6AF43D017F85C8AA88EFB1E
SHA-256 fingerprint
05:D3:2F:1B:4B:47:7C:C9:26:5D:27:7D:91:F1:9D:DC:15:31:48:2C:68:E3:A4:27:E0:F6:97:AA:E8:E2:1D:CD
Chain
R12 → ISRG Root X1
Subject Alternative Names (69)
alumni.fias.science, autoconfig.compeng.uni-frankfurt.de, autoconfig.fias-frankfurt.de, autoconfig.fias.institute, autoconfig.fias.news, autoconfig.fias.science, autoconfig.fias.uni-frankfurt.de, autoconfig.fiasdeepthinkers.de, autoconfig.figss.science, autoconfig.figss.uni-frankfurt.de, autoconfig.fsp-alice.de, autoconfig.g-ccn.de, autoconfig.hgs-hire.de, autoconfig.hhlr-gu.de, autoconfig.neurodream.org, autoconfig.spp2041.de, autoconfig.weltmaschine-frankfurt.de, autoconfig.xf-ijrc.net, autoconfig.xfi-jrc.net, compeng.uni-frankfurt.de, dev.fias.science, events.fias.science, fias-frankfurt.de, fias.uni-frankfurt.de, fiasdeepthinkers.de, figss.uni-frankfurt.de, fsp-alice.de, g-ccn.de, hgs-hire.de, hhlr-gu.de, hhlr-gu.eu, hhlrgu.de, hhlrgu.eu, indico.fias.uni-frankfurt.de, lists.fias.science, lists.fias.uni-frankfurt.de, neurodream.org, playout.fias.science, pm.fias.science, pm.fias.uni-frankfurt.de, software.fias.science, spp2041.de, users.fias.science, vfs.fias.science, vfs.fias.uni-frankfurt.de, webmail.fias.science, webmail.fias.uni-frankfurt.de, weltmaschine-darmstadt.de, weltmaschine-frankfurt.de, www.compeng.uni-frankfurt.de, www.fias-frankfurt.de, www.fias.uni-frankfurt.de, www.fiasdeepthinkers.de, www.figss.uni-frankfurt.de, www.fsp-alice.de, www.g-ccn.de, www.hgs-hire.de, www.hhlr-gu.de, www.hhlr-gu.eu, www.hhlrgu.de, www.hhlrgu.eu, www.neurodream.org, www.spp2041.de, www.weltmaschine-darmstadt.de, www.weltmaschine-frankfurt.de, www.xf-ijrc.net, www.xfi-jrc.net, xf-ijrc.net, xfi-jrc.net

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org, pki.dfn.de, sectigo.com).

Never get surprised by hgs-hire.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch hgs-hire.de 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.