Is tucs.org valid?

Domain: tucs.org

Valid: Yes, but should be blocked

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

Tested MX: rack-host.net (208.66.194.178)

Using MX pointer rack-host.net from DNS with priority: 0

Block: Yes

You should block this domain for signups/registrations.

Disposable: No

This does not look like a temporary/disposable e-mail domain.

Raw API reason:

Heuristics: T1

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