Is www.nav-bookmarks.win valid?
www.nav-bookmarks.win should be blocked (risk: 90/100). Use the Check-Mail API to detect risky domains.
www.nav-bookmarks.win 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": "www.nav-bookmarks.win",
"base_domain": "nav-bookmarks.win",
"text": "Highly suspicious",
"reason": "Anomalies detected",
"risk": 90,
"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": "www.nav-bookmarks.win",
"mx_ip": "172.67.198.136",
"mx_info": "No MX-pointer in DNS record. Using domain: www.nav-bookmarks.win",
"mx_fallback": true,
"mx_hosts": [
"www.nav-bookmarks.win"
],
"mx_ips": [
"172.67.198.136"
],
"mx_priorities": {
"www.nav-bookmarks.win": 0
},
"email_provider": null,
"disposable_provider": null,
"possible_typo": [],
"domain_age_days": null,
"domain_created_at": null,
"block_status_changed_at": "2026-05-12T16:54:03+00:00"
}
Status: Highly suspicious
Domain risk: 90
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Technical Details for www.nav-bookmarks.win
Risk Score
90 / 100
MX Host
www.nav-bookmarks.win
Last updated: May 12, 2026
How to Block www.nav-bookmarks.win
You can automatically block www.nav-bookmarks.win 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=www.nav-bookmarks.win"
Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.
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