Is fishday.biz valid?

fishday.biz should be blocked (risk: 60/100). Use the Check-Mail API to detect risky domains.

fishday.biz

fishday.biz 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": "fishday.biz",
    "base_domain": "fishday.biz",
    "text": "Highly suspicious",
    "reason": "Anomalies detected",
    "risk": 60,
    "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": "fishday.biz",
    "mx_ip": "137.74.151.144",
    "mx_info": "Using MX pointer fishday.biz from DNS with priority: 0",
    "mx_fallback": false,
    "mx_hosts": [
        "fishday.biz"
    ],
    "mx_ips": [
        "137.74.151.144"
    ],
    "mx_priorities": [],
    "email_provider": null,
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": null,
    "domain_created_at": null,
    "block_status_changed_at": "2026-08-27T17:13:07+00:00"
}
fishday.biz should be blocked
fishday.biz

Status: Highly suspicious

RISK
MEDIUM

Domain risk: 60

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Technical Details for fishday.biz

Risk Score

60 / 100

MX Host

fishday.biz

Last updated: Aug 27, 2026

How to Block fishday.biz

You can automatically block fishday.biz 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=fishday.biz"

Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.

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