Is in-ulm.de valid?

Domain: in-ulm.de

Valid: Yes, but should be blocked

This domain is valid and should be able to receive e-mail.

Tested MX: pmg.in-ulm.de (217.10.8.27)

Using MX pointer pmg.in-ulm.de from DNS with priority: 10

Block: Yes

You should block this domain for signups/registrations.

Disposable: Yes

This looks like a temporary/disposable e-mail domain.

Detection method: Advanced heuristics

This domain was blocked heuristically. Unknown domains are automatically analyzed and tagged with our advanced algorithms.

Raw API reason:

Heuristics x4

START USING FREE API