api.duckmail.sbs is a disposable email domain

api.duckmail.sbs is a disposable temp email domain from duckmail.sbs 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": "api.duckmail.sbs",
    "base_domain": "duckmail.sbs",
    "text": "Disposable email provider",
    "reason": "Heuristics: BP3",
    "risk": 100,
    "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": "api.duckmail.sbs",
    "mx_ip": "38.45.67.112",
    "mx_info": "No MX-pointer in DNS record. Using domain: api.duckmail.sbs",
    "mx_fallback": true,
    "mx_hosts": [
        "api.duckmail.sbs"
    ],
    "mx_ips": [
        "38.45.67.112"
    ],
    "mx_priorities": {
        "api.duckmail.sbs": 0
    },
    "email_provider": null,
    "disposable_provider": "duckmail.sbs",
    "possible_typo": [],
    "domain_age_days": null,
    "domain_created_at": null,
    "block_status_changed_at": "2026-09-01T17:48:57+00:00"
}