Is w43.xyz valid?
w43.xyz should be blocked (risk: 100/100). Use the Check-Mail API to detect risky domains.
w43.xyz 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": "w43.xyz",
"base_domain": "w43.xyz",
"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": false,
"is_role_based_email": false,
"mx_host": "mx156.hostedmxserver.com",
"mx_ip": "147.182.130.78",
"mx_info": "Using MX pointer mx156.hostedmxserver.com from DNS with priority: 620",
"mx_fallback": false,
"mx_hosts": [
"mx156.hostedmxserver.com"
],
"mx_ips": [
"147.182.130.78",
"164.90.197.143",
"164.90.197.79",
"164.90.197.105",
"147.182.160.18",
"164.90.197.162",
"147.182.189.184",
"147.182.180.139"
],
"mx_priorities": {
"mx156.hostedmxserver.com": 620
},
"email_provider": null,
"disposable_provider": null,
"possible_typo": [],
"domain_age_days": 409,
"domain_created_at": "2025-08-13T00:00:00+00:00",
"block_status_changed_at": "2026-09-05T05:51:51+00:00"
}
Status: Should be blocked
Domain risk: 91
Domain risk: 100
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Technical Details for w43.xyz
Risk Score
100 / 100
MX Host
mx156.hostedmxserver.com
Last updated: Sep 5, 2026
w43.xyz Domain Age
w43.xyz was registered on August 13, 2025 and is 1 year, 1 month old.
How to Block w43.xyz
You can automatically block w43.xyz and thousands of other disposable and fraudulent email domains using the free Check-Mail API. Simply query the API with any email domain to get an instant block recommendation.
Example API request:
curl -X POST "https://api.check-mail.org/v2/" \ -H "Authorization: Bearer YOUR_API_KEY" \ -d "domain=w43.xyz"
Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.
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