Find all domains that use the same name server

Identify domains that share the name server or the same hosting company, using the world’s largest constantly updated database with billions of existing records.

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100 free credits monthly. No credit card required.

1,473,142,430Domains and subdomains

196,463,291NS records updated daily

2,131Satisfied customers

Benefits

Сomprehensive & up-to-date

We provide service based on world’s largest constantly updated database with 1,473,142,430 domains and subdomains, 196,463,291 NS records updated daily.
Fast response & easy integration

All the results are duly parsed and normalized to a consistent format such as JSON and XML to easily integrate with your business processes.

Practical usage

Increase your website availability

Prevent your mail server from being blacklisted. Hosts with dubious reputation may affect email delivery. By using the Reverse MX API service you can identify spamming, phishing and other poor reputation sites on your host.

Security check

Uncover connected domains that may otherwise seem unrelated.
Perform research on suspicious name servers.
Protect your website from defacement.

Get access to the biggest Passive DNS Database

The passive DNS database is a large Historic DNS repository with 2 billion hostnames and hundreds of billions of Historic DNS Lookups. Our comprehensive passive DNS database allows finding out all historical DNS data points for any hostname and ip address.

Download database

Get 100 free credits monthly. No credit card required.

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Enterprise API Packages

API access through WhoisXMLAPI can be purchased as an annual subscription. The access pricing is based on the number of queries, which is measured monthly with per-minute rate limits. The pricing structure gives predictability to business planning and solution architecture.

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