Is c21community.com valid?
c21community.com has elevated risk (70/100). Verify email domains with the free Check-Mail API.
c21community.com
c21community.com is a suspicious domain, but should still be allowed to do sign-ups and registrations. However, based on our analysis, you should be suspicious about this domain and monitor usage.
Raw API JSON response:
{
"valid": true,
"block": false,
"domain": "c21community.com",
"base_domain": "c21community.com",
"text": "Suspicious",
"reason": "Some anomalies detected",
"risk": 70,
"is_disposable": false,
"is_email_forwarder": false,
"is_public_free": false,
"is_public_premium": false,
"is_business_provider": true,
"is_isp_email": false,
"is_email_api": false,
"is_web_hosting_email": false,
"is_self_hosted": false,
"is_parked": false,
"is_role_based_email": false,
"mx_host": "c21community-com.mail.protection.outlook.com",
"mx_ip": "52.101.8.46",
"mx_info": "Using MX pointer c21community-com.mail.protection.outlook.com from DNS with priority: 0",
"mx_fallback": false,
"mx_hosts": [
"c21community-com.mail.protection.outlook.com"
],
"mx_ips": [
"52.101.8.46",
"52.101.9.17",
"52.101.11.17",
"52.101.60.68"
],
"mx_priorities": {
"c21community-com.mail.protection.outlook.com": 0
},
"email_provider": "Exchange Online",
"disposable_provider": null,
"possible_typo": [],
"domain_age_days": 2047,
"domain_created_at": "2021-01-22T00:00:00+00:00",
"block_status_changed_at": "2026-08-26T00:24:52+00:00"
}
c21community.com
Status: Suspicious
RISK
MEDIUM
Domain risk: 70
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Technical Details for c21community.com
Risk Score
70 / 100
MX Host
c21community-com.mail.protection.outlook.com
Email Provider
Exchange Online
Last updated: Aug 26, 2026
c21community.com Domain Age
c21community.com was registered on January 22, 2021 and is 5 years, 7 months old.
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