SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
oma-ida-issum.de
SSL/TLS Certificate
SSL/TLS Certificate for oma-ida-issum.de
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- *.oma-ida-issum.de
- Valid from
- Apr 4, 2024
- Valid until
- Jul 3, 2024 (expired 854 days ago)
- Public key
- RSA 2048-bit
- Serial
- 03648863504F2F51B5AFD099F9C5FFAF17DC
- SHA-256 fingerprint
- AB:50:C7:63:9B:A9:77:13:3A:8E:1B:77:F4:3D:19:93:17:3B:1A:0C:19:DB:59:E7:CA:00:E8:66:F8:F8:8F:82
- Chain
- R3 → ISRG Root X1
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 Oct 26, 2026.
Never get surprised by oma-ida-issum.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch oma-ida-issum.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.