Is gcheck.xyz valid?

Domain: gcheck.xyz

Valid: Yes, but should be blocked

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

Tested MX: mx4.mainnetmail.com (165.22.206.176)

Using MX pointer mx4.mainnetmail.com 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.

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Detection method: Advanced heuristics

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

Raw API reason:

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Blacklisted

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