Is wintersisd.org valid?

wintersisd.org is a valid domain that should be allowed to do sign-ups and registrations. Based on our analysis, you should allow this domain.

Raw API JSON response:

{
    "valid": true,
    "block": false,
    "disposable": false,
    "email_forwarder": false,
    "domain": "wintersisd.org",
    "text": "Looks okay",
    "reason": "Heuristics: WM1",
    "risk": 10,
    "mx_host": "wintersisd-org.mail.protection.outlook.com",
    "possible_typo": [],
    "mx_ip": "52.101.11.17",
    "mx_info": "Using MX pointer wintersisd-org.mail.protection.outlook.com from DNS with priority: 0",
    "last_changed_at": "2020-06-01T20:33:49+00:00"
}