Is cititec.systems valid?
cititec.systems should be blocked (risk: 75/100). Use the Check-Mail API to detect risky domains.
cititec.systems 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": "cititec.systems",
"base_domain": "cititec.systems",
"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": false,
"is_parked": true,
"is_role_based_email": false,
"mx_host": "cititec.systems",
"mx_ip": "188.114.97.2",
"mx_info": "No MX-pointer in DNS record. Using domain: cititec.systems",
"mx_fallback": true,
"mx_hosts": [],
"mx_ips": [],
"mx_priorities": [],
"email_provider": null,
"disposable_provider": null,
"possible_typo": [],
"domain_age_days": 2988,
"domain_created_at": "2018-07-18T00:00:00+00:00",
"block_status_changed_at": "2026-09-12T17:24:27+00:00"
}
Status: Highly suspicious
Domain risk: 75
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Technical Details for cititec.systems
Risk Score
75 / 100
MX Host
cititec.systems
Last updated: Sep 12, 2026
cititec.systems Domain Age
cititec.systems was registered on July 18, 2018 and is 8 years, 2 months old.
How to Block cititec.systems
You can automatically block cititec.systems 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=cititec.systems"
Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.
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