Is guilu.com.br valid?
guilu.com.br should be blocked (risk: 15/100). Use the Check-Mail API to detect risky domains.
guilu.com.br 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": "guilu.com.br",
"base_domain": "guilu.com.br",
"text": "Domain cannot receive email",
"reason": "MX points to a placeholder host",
"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": false,
"is_parked": false,
"is_role_based_email": false,
"mx_host": "ms69412558.msv1.invalid",
"mx_ip": "74.125.133.26",
"mx_info": "Using MX pointer ms69412558.msv1.invalid from DNS with priority: 767",
"mx_fallback": false,
"mx_hosts": [
"ms69412558.msv1.invalid"
],
"mx_ips": [
"74.125.133.26"
],
"mx_priorities": {
"ms69412558.msv1.invalid": 767
},
"email_provider": null,
"disposable_provider": null,
"possible_typo": [],
"domain_age_days": 941,
"domain_created_at": "2024-02-01T00:00:00+00:00",
"block_status_changed_at": "2026-08-30T06:01:05+00:00"
}
Status: Domain cannot receive email
Domain risk: 15
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Technical Details for guilu.com.br
Risk Score
15 / 100
MX Host
ms69412558.msv1.invalid
Last updated: Aug 30, 2026
guilu.com.br Domain Age
guilu.com.br was registered on February 1, 2024 and is 2 years, 7 months old.
How to Block guilu.com.br
You can automatically block guilu.com.br 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=guilu.com.br"
Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.
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