Is borner.us valid?

borner.us 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": false,
    "domain": "borner.us",
    "base_domain": "borner.us",
    "text": "Uses an email forwarding service",
    "reason": "Forwarding service",
    "risk": 40,
    "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": "mx1.efwd.spaceship.net",
    "mx_ip": "162.255.118.11",
    "mx_info": "Using MX pointer mx1.efwd.spaceship.net from DNS with priority: 0",
    "mx_fallback": false,
    "mx_hosts": [
        "mx1.efwd.spaceship.net",
        "mx2.efwd.spaceship.net"
    ],
    "mx_ips": [
        "162.255.118.11",
        "162.255.118.12"
    ],
    "mx_priorities": {
        "mx1.efwd.spaceship.net": 0,
        "mx2.efwd.spaceship.net": 0
    },
    "email_provider": "Spaceship Email Forwarding",
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": 38,
    "domain_created_at": "2026-08-20T00:00:00+00:00",
    "block_status_changed_at": "2026-09-06T22:15:27+00:00"
}