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 bonse-bs.de

Valid
Issued by (CA)
Starfield Technologies, Inc.
Subject
www.bonse-bs.de
Valid from
Nov 11, 2025
Valid until
Dec 6, 2026 (63 days remaining)
Public key
RSA 2048-bit
Serial
457BE80911AF6022
SHA-256 fingerprint
A0:03:09:2B:B4:B7:AA:E9:C2:5B:E5:73:BB:67:FC:CF:C0:13:E7:2C:48:21:7A:38:48:14:41:B7:22:93:92:06
Chain
Starfield Secure Certificate Authority - G2 → Starfield Root Certificate Authority - G2
Subject Alternative Names (2)
bonse-bs.de, www.bonse-bs.de

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 Aug 4, 2026.

Never get surprised by bonse-bs.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch bonse-bs.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.