Is n21.info valid?

n21.info 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,
    "domain": "n21.info",
    "base_domain": "n21.info",
    "text": "Looks okay",
    "reason": "Heuristics: WM1",
    "risk": 30,
    "is_disposable": false,
    "is_email_forwarder": false,
    "is_public_free": false,
    "is_public_premium": false,
    "is_business_provider": false,
    "is_isp_email": true,
    "is_email_api": false,
    "is_web_hosting_email": false,
    "is_self_hosted": false,
    "is_parked": false,
    "is_role_based_email": false,
    "mx_host": "smtp-01.tld.t-online.de",
    "mx_ip": "194.25.134.76",
    "mx_info": "Using MX pointer smtp-01.tld.t-online.de from DNS with priority: 10",
    "mx_fallback": false,
    "mx_hosts": [
        "smtp-01.tld.t-online.de",
        "smtp-02.tld.t-online.de"
    ],
    "mx_ips": [
        "194.25.134.76",
        "194.25.134.12"
    ],
    "mx_priorities": {
        "smtp-01.tld.t-online.de": 10,
        "smtp-02.tld.t-online.de": 10
    },
    "email_provider": "T-Online Mail",
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": 8124,
    "domain_created_at": "2004-07-08T00:00:00+00:00",
    "block_status_changed_at": "2025-05-29T11:12:05+00:00"
}