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 ais-magdeburg.de

Valid
Issued by (CA)
Let's Encrypt
Subject
ais-magdeburg.de
Valid from
Oct 8, 2026
Valid until
Jan 6, 2027 (61 days remaining)
Public key
RSA 4096-bit
Serial
060935809E8917B873E8213CDBA3687A6545
SHA-256 fingerprint
FD:CF:71:A6:00:D7:4D:AF:B4:31:6D:05:51:04:00:76:26:18:28:72:36:E5:1B:7E:A2:85:65:27:A8:D9:68:50
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
ais-magdeburg.de, www.ais-magdeburg.de

Certificate Authority Authorization (CAA)

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

We've observed 1 previous certificate for this host. This certificate has been served since Oct 25, 2026.

Never get surprised by ais-magdeburg.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ais-magdeburg.de continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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.

Monitor this certificate free

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