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 blaugelb-immobilien.com

Valid
Issued by (CA)
Sectigo Limited
Subject
www.blaugelb-immobilien.com
Valid from
Jun 4, 2026
Valid until
Dec 19, 2026 (48 days remaining)
Public key
RSA 2048-bit
Serial
C2363E438C2FA4699DB3DF77740CF67C
SHA-256 fingerprint
DA:FF:2F:53:F3:DA:C3:4B:E6:82:DA:08:90:45:21:48:71:21:E3:4E:EC:7E:4B:11:01:9C:6F:F7:47:D4:D3:D8
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
Subject Alternative Names (2)
blaugelb-immobilien.com, www.blaugelb-immobilien.com

Certificate Authority Authorization (CAA)

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

Never get surprised by blaugelb-immobilien.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch blaugelb-immobilien.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.