Is cltec.ru valid?
cltec.ru should be blocked (risk: 75/100). Use the Check-Mail API to detect risky domains.
cltec.ru 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": "cltec.ru",
"base_domain": "cltec.ru",
"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": "mx0.cltec.ru",
"mx_ip": "91.201.54.7",
"mx_info": "Using MX pointer mx0.cltec.ru from DNS with priority: 1",
"mx_fallback": false,
"mx_hosts": [
"mx0.cltec.ru",
"mx1.cltec.ru"
],
"mx_ips": [
"91.201.54.7",
"91.201.54.8"
],
"mx_priorities": {
"mx0.cltec.ru": 1,
"mx1.cltec.ru": 5
},
"email_provider": null,
"disposable_provider": null,
"possible_typo": [],
"domain_age_days": 3366,
"domain_created_at": "2017-06-21T00:00:00+00:00",
"block_status_changed_at": "2026-09-07T00:11:55+00:00"
}
Status: Highly suspicious
Domain risk: 75
Are you a programmer?
Did you know we have a free API to validate e-mails and block cltec.ru?
Technical Details for cltec.ru
Risk Score
75 / 100
MX Host
mx0.cltec.ru
Last updated: Sep 7, 2026
cltec.ru Domain Age
cltec.ru was registered on June 21, 2017 and is 9 years, 2 months old.
How to Block cltec.ru
You can automatically block cltec.ru 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=cltec.ru"
Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.
Related Resources
Recently checked domains:
mail.pogilang.com usmary.com losmigueles.com.mx rdoll.com adobe.apple.lunaris.eu.cc