Is ci.williston.nd.us valid?

Domain: ci.williston.nd.us

Valid: Yes

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

Tested MX: ci-williston-nd-us.mail.protection.outlook.com (52.101.8.50)

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Using MX pointer ci-williston-nd-us.mail.protection.outlook.com from DNS with priority: 10

Block: No

You do not need to block this domain for signups/registrations.

Disposable: No

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

Raw API reason:

Heuristics: WM1

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