Is prointernet.pl valid?

prointernet.pl 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": "prointernet.pl",
    "base_domain": "prointernet.pl",
    "text": "Looks okay",
    "reason": "Heuristics: WM1",
    "risk": 10,
    "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": false,
    "is_role_based_email": false,
    "mx_host": "mx1.zenbox.pl",
    "mx_ip": "46.245.193.99",
    "mx_info": "Using MX pointer mx1.zenbox.pl from DNS with priority: 10",
    "mx_fallback": false,
    "mx_hosts": [
        "mx1.zenbox.pl",
        "mx2.zenbox.pl",
        "mx3.zenbox.pl"
    ],
    "mx_ips": [
        "46.245.193.99",
        "46.245.193.11",
        "46.245.193.12"
    ],
    "mx_priorities": {
        "mx1.zenbox.pl": 10,
        "mx2.zenbox.pl": 20,
        "mx3.zenbox.pl": 30
    },
    "email_provider": "Zenbox",
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": null,
    "domain_created_at": null,
    "block_status_changed_at": "2022-11-15T00:00:57+00:00"
}