Is sspu.cz valid?

sspu.cz 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": "sspu.cz",
    "base_domain": "sspu.cz",
    "text": "Valid domain",
    "reason": "Heuristics: OK",
    "risk": 10,
    "is_disposable": false,
    "is_email_forwarder": false,
    "is_public_free": false,
    "is_public_premium": false,
    "is_business_provider": true,
    "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": "aspmx.l.google.com",
    "mx_ip": "64.233.163.26",
    "mx_info": "Using MX pointer aspmx.l.google.com from DNS with priority: 1",
    "mx_fallback": false,
    "mx_hosts": [
        "aspmx.l.google.com",
        "alt2.aspmx.l.google.com",
        "alt1.aspmx.l.google.com",
        "alt4.aspmx.l.google.com",
        "alt3.aspmx.l.google.com"
    ],
    "mx_ips": [
        "64.233.161.27",
        "2a00:1450:4010:c01::1a",
        "172.253.158.27",
        "2404:6800:4003:c26::1a",
        "192.178.213.26",
        "2a00:1450:4025:c01::1a",
        "192.178.230.26",
        "2404:6800:400b:c01b::1a",
        "172.253.148.27",
        "2404:6800:4008:c01::1a"
    ],
    "mx_priorities": {
        "aspmx.l.google.com": 1,
        "alt1.aspmx.l.google.com": 5,
        "alt2.aspmx.l.google.com": 5,
        "alt3.aspmx.l.google.com": 10,
        "alt4.aspmx.l.google.com": 10
    },
    "email_provider": "Google Workspace",
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": null,
    "domain_created_at": null,
    "block_status_changed_at": "2026-07-14T17:48:36+00:00"
}