Is 99999999.ip-ddns.com valid?

99999999.ip-ddns.com is an email forwarding domain that allows users to create aliases to hide their real email. These alias emails are frequently used by spammers to bypass verification systems.

Raw API JSON response:

{
    "valid": true,
    "block": true,
    "domain": "99999999.ip-ddns.com",
    "base_domain": "99999999.ip-ddns.com",
    "text": "Highly suspicious",
    "reason": "Anomalies detected",
    "risk": 75,
    "is_disposable": false,
    "is_email_forwarder": true,
    "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": false,
    "is_parked": false,
    "is_role_based_email": false,
    "mx_host": "99999999.ip-ddns.com",
    "mx_ip": "188.165.11.93",
    "mx_info": "No MX-pointer in DNS record. Using domain: 99999999.ip-ddns.com",
    "mx_fallback": true,
    "mx_hosts": [],
    "mx_ips": [],
    "mx_priorities": [],
    "email_provider": null,
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": null,
    "domain_created_at": null,
    "block_status_changed_at": "2025-08-15T09:21:07+00:00"
}