Is janharmen.nl valid?

janharmen.nl should be blocked (risk: 75/100). Use the Check-Mail API to detect risky domains.

janharmen.nl

janharmen.nl 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": "janharmen.nl",
    "base_domain": "janharmen.nl",
    "text": "Highly suspicious",
    "reason": "Anomalies detected",
    "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": true,
    "is_parked": false,
    "is_role_based_email": false,
    "mx_host": "janharmen.nl",
    "mx_ip": "45.82.188.159",
    "mx_info": "Using MX pointer janharmen.nl from DNS with priority: 10",
    "mx_fallback": false,
    "mx_hosts": [
        "janharmen.nl"
    ],
    "mx_ips": [
        "45.82.188.159"
    ],
    "mx_priorities": {
        "janharmen.nl": 10
    },
    "email_provider": null,
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": 9194,
    "domain_created_at": "2001-02-13T00:00:00+00:00",
    "block_status_changed_at": "2026-04-17T07:39:19+00:00"
}
janharmen.nl should be blocked
janharmen.nl

Status: Highly suspicious

RISK
HIGH

Domain risk: 75

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Technical Details for janharmen.nl

Risk Score

75 / 100

MX Host

janharmen.nl

Last updated: Apr 17, 2026

janharmen.nl Domain Age

janharmen.nl was registered on February 13, 2001 and is 25 years, 2 months old.

How to Block janharmen.nl

You can automatically block janharmen.nl 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=janharmen.nl"

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

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