Domain Validation
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MailboxValidator Email Domain Validation is a free domain name validation through domain mail server to determine the email domain server status, MX records, DNS records and so on. This simple demo performs a quick check to see if an email domain is valid and responding. If you would like to perform a comprehensive email validation, please try the Email Validation Demo.
extension.org
is Active
🌐 extension.org [WHOIS]
Active
This domain is active.MX Records
This domain has MX records.DNS Records
This domain has DNS records.Not Free
This domain is not a free email domain.Not Disposable
This domain is not a disposable email domain.Recent Domain Names Lookup
The last 10 domain names queried in our demo.
Get Started & Perform Validation For Free
Looking For Quick & Seamless Integration? Try it now!
Validate and clean your email list by detecting disposable emails, invalid emails, mail server and much more.
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