Is osterby.lawyer valid?
Verify if osterby.lawyer is a valid e-mail domain
osterby.lawyer
osterby.lawyer 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 osterby.lawyer 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": "osterby.lawyer",
"text": "Looks somewhat suspicious",
"reason": "Heuristics: T1",
"risk": 30,
"mx_host": "mail.protonmail.ch",
"possible_typo": [],
"mx_ip": "185.205.70.128",
"mx_info": "Using MX pointer mail.protonmail.ch from DNS with priority: 10",
"last_changed_at": "2025-09-11T08:35:20+02:00"
}
osterby.lawyer
Status: Looks somewhat suspicious
RISK
MEDIUM
Domain risk: 30
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