Is tui.ua valid?
tui.ua should be blocked (risk: 15/100). Use the Check-Mail API to detect risky domains.
tui.ua 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": "tui.ua",
"base_domain": "tui.ua",
"text": "Domain cannot receive email",
"reason": "Domain declares it accepts no mail",
"risk": 15,
"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": true,
"is_parked": false,
"is_role_based_email": false,
"mx_host": "tui.ua",
"mx_ip": "5.9.53.27",
"mx_info": "Domain declares it accepts no mail (RFC 7505 null MX).",
"mx_fallback": false,
"mx_hosts": [],
"mx_ips": [],
"mx_priorities": [],
"email_provider": null,
"disposable_provider": null,
"possible_typo": [],
"domain_age_days": 7967,
"domain_created_at": "2004-11-12T00:00:00+00:00",
"block_status_changed_at": "2026-08-13T19:22:54+00:00"
}
Status: Domain cannot receive email
Domain risk: 15
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Technical Details for tui.ua
Risk Score
15 / 100
MX Host
tui.ua
Last updated: Aug 13, 2026
tui.ua Domain Age
tui.ua was registered on November 12, 2004 and is 21 years, 10 months old.
How to Block tui.ua
You can automatically block tui.ua 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=tui.ua"
Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.
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