Reverse IP/DNS | Whois XML API

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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100 free requests monthly. No credit card required.

1,473,142,430Domains and subdomains
1,227,998,076IPv4 database updated daily
2,131Satisfied customers

Reverse IP/DNS product line includes

Lookup

Just take an IP address as input to start your Reverse IP/DNS query. See which domain names (if any) are sharing the queried IP address in a custom report.

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

API

Benefit from Reverse IP/DNS’s capabilities via API calls to our database. Integration is easy with the help of client libraries.

DNS Database Download

Our DNS database is a repository of all the connections identified for the past 12 years between IP addresses and domain names. We offer convenient formats for easy correlation with other data sources and straightforward integration into existing products.

DNS Database Download | Whois XML API

Benefits

  • Сomprehensive

    Our Reverse IP/DNS product line gives access to most current and historical connections between IP addresses and hostnames. Our DNS database is one of the largest of its kind with billions of recorded events.

  • Convenient

    Just use an IP address to find domain names (possibly) sharing it. Users can choose the consumption model that works best for them (lookup, API, or database).

Reverse IP/DNS Overview | Whois XML API

Get 100 free credits monthly. No credit card required.

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