Is gnbcorp.com valid?
gnbcorp.com should be blocked (risk: 45/100). Use the Check-Mail API to detect risky domains.
gnbcorp.com 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": "gnbcorp.com",
"base_domain": "gnbcorp.com",
"text": "Suspicious",
"reason": "Anomalies detected",
"risk": 45,
"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": true,
"is_role_based_email": false,
"mx_host": "gnbcorp.com",
"mx_ip": "76.223.54.146",
"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": null,
"domain_created_at": null,
"block_status_changed_at": "2026-01-16T11:38:37+00:00"
}
Status: Suspicious
Domain risk: 45
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Technical Details for gnbcorp.com
Risk Score
45 / 100
MX Host
gnbcorp.com
Last updated: Jan 16, 2026
How to Block gnbcorp.com
You can automatically block gnbcorp.com 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=gnbcorp.com"
Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.
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