Is subon.lib.mo.us valid?
Verify if subon.lib.mo.us is a valid e-mail domain
subon.lib.mo.us
subon.lib.mo.us 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 subon.lib.mo.us 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": "subon.lib.mo.us",
"text": "Looks okay",
"reason": "Heuristics: WM1",
"risk": 10,
"mx_host": "aspmx.l.google.com",
"possible_typo": [],
"mx_ip": "192.178.218.27",
"mx_info": "Using MX pointer aspmx.l.google.com from DNS with priority: 1",
"last_changed_at": "2025-07-25T15:35:16+02:00"
}
subon.lib.mo.us
Status: Looks okay
RISK
LOW
Domain risk: 10
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