Is syn.ru valid?

syn.ru is a domain that should be blocked from sign-ups or registrations. Based on our analysis, you should block this domain. If a user is trying to sign-up using an e-mail on this domain, it's likely that it's a malicious or fraudulent attempt.

Raw API JSON response:

{
    "valid": true,
    "block": true,
    "domain": "syn.ru",
    "base_domain": "syn.ru",
    "text": "Should be blocked",
    "reason": "Heuristics: BM1",
    "risk": 100,
    "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": false,
    "is_self_hosted": false,
    "is_parked": null,
    "is_role_based_email": false,
    "mx_host": "void.blackhole.mx",
    "mx_ip": "195.201.28.161",
    "mx_info": "Using MX pointer void.blackhole.mx from DNS with priority: 0",
    "mx_fallback": false,
    "mx_hosts": [
        "void.blackhole.mx"
    ],
    "mx_ips": [
        "195.201.28.161",
        "95.217.0.12",
        "78.47.159.103"
    ],
    "mx_priorities": {
        "void.blackhole.mx": 0
    },
    "email_provider": null,
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": 3089,
    "domain_created_at": "2018-04-18T00:00:00+00:00",
    "block_status_changed_at": "2026-09-30T12:16:26+00:00"
}