Is challengeinfra.com valid?

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

Raw API JSON response:

{
    "valid": false,
    "block": true,
    "domain": "challengeinfra.com",
    "base_domain": "challengeinfra.com",
    "text": "Domain does not exist",
    "reason": "does_not_exist",
    "risk": 40,
    "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": false,
    "is_self_hosted": true,
    "is_parked": false,
    "is_role_based_email": false,
    "mx_host": "challengeinfra.com",
    "mx_ip": "103.21.59.25",
    "mx_info": "Using MX pointer challengeinfra.com from DNS with priority: 0",
    "mx_fallback": false,
    "mx_hosts": [
        "challengeinfra.com"
    ],
    "mx_ips": [
        "103.21.59.25"
    ],
    "mx_priorities": [],
    "email_provider": null,
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": null,
    "domain_created_at": null,
    "block_status_changed_at": "2026-09-12T22:33:23+00:00"
}