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 konzept-plus.group

Valid
Issued by (CA)
Let's Encrypt
Subject
konzept-plus.group
Valid from
Jul 28, 2026
Valid until
Oct 26, 2026 (31 days remaining)
Public key
EC 384-bit
Serial
05A1782E77EDC189994703DF5BFAD9B80C47
SHA-256 fingerprint
3F:7E:EC:0E:7B:D5:24:FD:99:B9:67:95:AF:A0:04:8E:69:FF:BE:DA:E6:47:EB:E3:5E:04:DB:10:5E:1D:C5:C2
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
konzept-plus.group, www.konzept-plus.group

Certificate Authority Authorization (CAA)

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

This certificate has been served since Sep 23, 2026.

Never get surprised by konzept-plus.group's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch konzept-plus.group 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.