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 bonum-media.com

Valid
Issued by (CA)
Let's Encrypt
Subject
bonum-media.de
Valid from
Oct 9, 2026
Valid until
Jan 7, 2027 (78 days remaining)
Public key
RSA 2048-bit
Serial
06A857C26BD865099306D6BB4A71344A8471
SHA-256 fingerprint
36:0B:18:3D:9B:C6:89:03:E1:2E:CC:BB:56:8F:A5:94:53:46:27:44:7D:FD:FA:89:1C:5D:3B:95:6B:99:5F:10
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (8)
bonum-media.com, bonum-media.de, bonum.media, mail.bonum-media.de, webmail.bonum-media.de, www.bonum-media.com, www.bonum-media.de, www.bonum.media

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 12, 2026.

Never get surprised by bonum-media.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch bonum-media.com 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.