Find relations like ownership between hostnames and IPs

Find out how hostnames and IP addresses are related by using the world’s largest constantly updated database with billions of existing records.

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Reverse IP/DNS product line includes

Lookup

Just take a domain name, DNS, or an IP address and do a quick Reverse IP or Reverse DNS Lookup to see if any other domains are hosted on the same server.

Reverse IP/DNS Lookup | Whois XML API
Reverse IP/DNS API | Whois XML API

API

With one API call make sure your website does not share its IP address with another one as that may result in overblocking - a situation when a blocked malicious site also blocks other sites with the same IP address.

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

    Find out how hostnames and IP addresses are related using the world’s largest constantly updated database with billions of existing records.

  • Fast

    Just take a domain name, DNS, or an IP address and do a quick Reverse IP or Reverse DNS Lookup to see if any other domains are hosted on the same server.

  • Handy

    Our Reverse IP API and Reverse DNS API will come in handy to detect suspicious websites that are hosted on the same server with dangerous websites.

Reverse IP/DNS Overview | Whois XML API

Get 100 free credits monthly. No credit card required.

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