Is app.fasttempmail.com valid?

app.fasttempmail.com 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": "app.fasttempmail.com",
    "base_domain": "fasttempmail.com",
    "text": "Suspicious domain",
    "reason": "Heuristics: OK",
    "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": false,
    "is_parked": false,
    "is_role_based_email": false,
    "mx_host": "app.fasttempmail.com",
    "mx_ip": "188.114.96.12",
    "mx_info": "No MX-pointer in DNS record. Using domain: app.fasttempmail.com",
    "mx_fallback": true,
    "mx_hosts": [
        "app.fasttempmail.com"
    ],
    "mx_ips": [
        "188.114.96.12"
    ],
    "mx_priorities": {
        "app.fasttempmail.com": 0
    },
    "email_provider": null,
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": null,
    "domain_created_at": null,
    "block_status_changed_at": "2026-06-26T06:02:30+00:00"
}