Is callum.cx valid?

callum.cx 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": "callum.cx",
    "base_domain": "callum.cx",
    "text": "Looks okay",
    "reason": "Heuristics: WM1",
    "risk": 10,
    "is_disposable": false,
    "is_email_forwarder": false,
    "is_public_free": false,
    "is_public_premium": true,
    "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": "mail.protonmail.ch",
    "mx_ip": "176.119.200.128",
    "mx_info": "Using MX pointer mail.protonmail.ch from DNS with priority: 10",
    "mx_fallback": false,
    "mx_hosts": [
        "mail.protonmail.ch",
        "mailsec.protonmail.ch"
    ],
    "mx_ips": [
        "176.119.200.128",
        "185.70.42.128",
        "185.205.70.128",
        "185.70.42.129",
        "176.119.200.129",
        "185.205.70.129"
    ],
    "mx_priorities": {
        "mail.protonmail.ch": 10,
        "mailsec.protonmail.ch": 20
    },
    "email_provider": "Proton Mail",
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": 656,
    "domain_created_at": "2024-11-27T00:00:00+00:00",
    "block_status_changed_at": "2025-10-02T23:06:47+00:00"
}