mysteryion.com is a disposable email domain

mysteryion.com is a disposable temp email domain from EmailOnDeck that provides throwaway email addresses and should be blocked. These temporary addresses are frequently exploited to bypass verification systems and create fake accounts.

Raw API JSON response:

{
    "valid": true,
    "block": true,
    "domain": "mysteryion.com",
    "base_domain": "mysteryion.com",
    "text": "Disposable or temporary email domain",
    "reason": "disposable",
    "risk": 91,
    "is_disposable": true,
    "is_email_forwarder": false,
    "is_public_free": false,
    "is_public_premium": false,
    "is_business_provider": false,
    "is_isp_email": false,
    "is_email_api": false,
    "is_web_hosting_email": false,
    "is_self_hosted": true,
    "is_parked": false,
    "is_role_based_email": false,
    "mx_host": "q5z940smailstore1.mysteryion.com",
    "mx_ip": "138.197.239.249",
    "mx_info": "Using MX pointer q5z940smailstore1.mysteryion.com from DNS with priority: 49",
    "mx_fallback": false,
    "mx_hosts": [
        "q5z940smailstore1.mysteryion.com"
    ],
    "mx_ips": [
        "138.197.239.249"
    ],
    "mx_priorities": {
        "q5z940smailstore1.mysteryion.com": 49
    },
    "email_provider": null,
    "disposable_provider": "EmailOnDeck",
    "possible_typo": [],
    "domain_age_days": 205,
    "domain_created_at": "2026-03-24T00:00:00+00:00",
    "block_status_changed_at": "2026-07-26T16:21:41+00:00"
}