Is kroisenbrunner.de valid?

kroisenbrunner.de is a domain that should be blocked from sign-ups or registrations. Based on our analysis, you should block this domain. If a user is trying to sign-up using an e-mail on this domain, it's likely that it's a malicious or fraudulent attempt.

Raw API JSON response:

{
    "valid": true,
    "block": true,
    "domain": "kroisenbrunner.de",
    "base_domain": "kroisenbrunner.de",
    "text": "Highly suspicious",
    "reason": "Anomalies detected",
    "risk": 90,
    "is_disposable": false,
    "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": true,
    "is_self_hosted": false,
    "is_parked": true,
    "is_role_based_email": false,
    "mx_host": "mx00.ionos.de",
    "mx_ip": "212.227.15.41",
    "mx_info": "Using MX pointer mx01.ionos.de from DNS with priority: 10",
    "mx_fallback": false,
    "mx_hosts": [
        "mx00.ionos.de",
        "mx01.ionos.de"
    ],
    "mx_ips": [
        "212.227.15.41",
        "217.72.192.67"
    ],
    "mx_priorities": {
        "mx00.ionos.de": 10,
        "mx01.ionos.de": 10
    },
    "email_provider": "IONOS",
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": null,
    "domain_created_at": null,
    "block_status_changed_at": "2026-04-12T21:12:26+00:00"
}