Is 401ksource.com valid?

Domain: 401ksource.com

Valid: Yes

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

Tested MX: 401ksource-com.inbound.emailservice.io (34.237.192.136)

Using MX pointer 401ksource-com.inbound.emailservice.io from DNS with priority: 10

USE THE API, DO NOT SCRAPE THIS DATA

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.

DO NOT SCRAPE THIS DATA, USE THE API

Raw API reason:

Heuristics: WM1

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