Reveal all the domains that use the same mail server

By using the Reverse MX service you can identify spamming, phishing and other poor reputation sites on your host.

Get started

100 free requests monthly. No credit card required.

Reverse MX product line includes

Lookup

Just take the mail server and do a quick Reverse MX Lookup to reveal all the domains that use the same mail server.

Reverse MX Lookup | Whois XML API
Reverse MX API | Whois XML API

API

With a single API call, make sure that your website does not share the mail server with any suspicious or blacklisted domains - hosts with a dubious reputation may affect email delivery.

DNS Database Download

The passive DNS database is a large Historic DNS repository with 2 billion hostnames and hundreds of billions of Historic DNS Lookups. We offer an exhaustive and properly parsed passive DNS database in the format of an MYSQL dump or a CSV file that can be easily processed by your application.

DNS Database Download | Whois XML API

Benefits

  • Сomprehensive & up-to-date

    We provide service based on the world’s largest constantly updated database with 1,473,142,430 domains and subdomains, 142,703,533 MX records updated daily.

  • Fast response & easy integration

    A fast and easy-to-use API for quick access to the largest database. All the results are duly parsed and normalized to a consistent format such as JSON and XML for easy integration with your business processes.

Reverse MX Overview | Whois XML API

Get 100 free credits monthly. No credit card required.

Get started

Trusted by
the smartest
companies

Have questions?

We work hard to improve our services for you. As part of that, we welcome your feedback, questions and suggestions. Please let us know your thoughts and feelings, and any way in which you think we can improve our product.

For a quick response, please select the request type that best suits your needs. For more info regarding the request types, see the Contact us page.

By submitting, you agree to the Terms of Service and Privacy Policy.

Or shoot us an email to