SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lumma-krefeld.de
SSL/TLS Certificate
SSL/TLS Certificate for lumma-krefeld.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- www.lumma-krefeld.de
- Valid from
- Feb 9, 2026
- Valid until
- Feb 23, 2027 (103 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 92E32E1E338F8D0535A95BA3868A4784
- SHA-256 fingerprint
- 88:06:17:79:62:DD:6F:DF:BB:E4:C4:1F:16:78:EE:54:DB:BA:6E:A1:E0:0E:7B:F5:C0:C9:40:7B:F7:42:31:27
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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 29, 2026.
Never get surprised by lumma-krefeld.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch lumma-krefeld.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.