Is koiholdings.com valid?
koiholdings.com should be blocked (risk: 75/100). Use the Check-Mail API to detect risky domains.
koiholdings.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": "koiholdings.com",
"base_domain": "koiholdings.com",
"text": "Domain is parked",
"reason": "parked",
"risk": 75,
"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": "koiholdings.com",
"mx_ip": "13.248.213.45",
"mx_info": "No MX-pointer in DNS record. Using domain: koiholdings.com",
"mx_fallback": true,
"mx_hosts": [],
"mx_ips": [],
"mx_priorities": [],
"email_provider": null,
"disposable_provider": null,
"possible_typo": [],
"domain_age_days": 3052,
"domain_created_at": "2018-06-01T00:00:00+00:00",
"block_status_changed_at": "2026-09-07T21:04:38+00:00"
}
Status: Domain is parked
Domain risk: 75
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Technical Details for koiholdings.com
Risk Score
75 / 100
MX Host
koiholdings.com
Last updated: Sep 7, 2026
koiholdings.com Domain Age
koiholdings.com was registered on June 1, 2018 and is 8 years, 4 months old.
How to Block koiholdings.com
You can automatically block koiholdings.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=koiholdings.com"
Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.
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