upperbox.org is a disposable email domain

upperbox.org is a disposable temp email domain that provides throwaway email addresses and should be blocked. These temporary addresses are frequently exploited to bypass verification systems and create fake accounts.

Raw API JSON response:

{
    "valid": true,
    "block": true,
    "domain": "upperbox.org",
    "base_domain": "upperbox.org",
    "text": "Disposable \/ temporary domain",
    "reason": "Heuristics x3",
    "risk": 95,
    "is_disposable": true,
    "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": "upperbox.org",
    "mx_ip": "95.173.161.239",
    "mx_info": "No MX-pointer in DNS record. Using domain: upperbox.org",
    "mx_fallback": true,
    "mx_hosts": [
        "upperbox.org"
    ],
    "mx_ips": [
        "95.173.161.239"
    ],
    "mx_priorities": {
        "mx156.hostedmxserver.com": 10
    },
    "email_provider": null,
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": 1155,
    "domain_created_at": "2023-01-31T00:00:00+00:00",
    "block_status_changed_at": "2023-02-12T16:11:09+00:00"
}