Is customstar.com valid?

customstar.com should be blocked (risk: 45/100). Use the Check-Mail API to detect risky domains.

customstar.com

customstar.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": "customstar.com",
    "base_domain": "customstar.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": "customstar.com",
    "mx_ip": "13.248.169.48",
    "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": 6762,
    "domain_created_at": "2008-02-21T00:00:00+00:00",
    "block_status_changed_at": "2026-07-29T15:38:49+00:00"
}
customstar.com should be blocked
customstar.com

Status: Suspicious

RISK
MEDIUM

Domain risk: 45

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Technical Details for customstar.com

Risk Score

45 / 100

MX Host

customstar.com

Last updated: Jul 29, 2026

customstar.com Domain Age

customstar.com was registered on February 21, 2008 and is 18 years, 6 months old.

How to Block customstar.com

You can automatically block customstar.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=customstar.com"

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

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