Is cordinal.io valid?
Verify if cordinal.io is a valid e-mail domain
cordinal.io
cordinal.io is a valid domain that should be allowed to do sign-ups and registrations. Based on our analysis, you should allow this domain. If a user is trying to sign-up using an e-mail on this domain, it is most likely okay.
The best way to verify email domains like cordinal.io is to use the Check-Mail API, available for free, for all programming languages.
Raw API JSON response:
"valid": true,
"block": false,
"disposable": false,
"email_forwarder": false,
"domain": "cordinal.io",
"text": "Looks okay",
"reason": "Heuristics: WM1",
"risk": 10,
"mx_host": "alt2.aspmx.l.google.com",
"possible_typo": [],
"mx_ip": "142.250.4.26",
"mx_info": "Using MX pointer alt2.aspmx.l.google.com from DNS with priority: 5",
"last_changed_at": "2025-06-13T18:12:38+02:00"
}
cordinal.io
Status: Looks okay
RISK
LOW
Domain risk: 10
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