Is k05rc.gpa.lu valid?

Domain: k05rc.gpa.lu

Valid: Yes, but should be blocked

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

Tested MX: gpa.lu (51.178.26.38)

Using MX pointer gpa.lu from DNS with priority: 1

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:

USE THE API, DO NOT SCRAPE THIS DATA

Disposable

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