Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.
Look into all current and historical DNS / IP connections between domains and A, MX, NS, and other records. Monitor suspicious changes to DNS records.
Get detailed context on an IP address, including its user’s geolocation, time zone, connected domains, connection type, IP range, ASN, and other network ownership details.
Access our web-based solution to dig into and monitor all domain events of interest.
Get access to a web-based enterprise-grade solution to search and monitor domain registrations and ownership details for branded terms, fuzzy matches, registrants of interest, and more.
Detect and block access to and from dangerous domain names before malicious actors can weaponize them. Contact us today for more information.
Unlock integrated intelligence on Internet properties and their ownership, infrastructure, and other attributes.
Our complete set of domain, IP, and DNS intelligence available via API calls as an annual subscription with predictable pricing.
Offers complete access to WHOIS, IP, DNS, and subdomain data for product enrichment, threat hunting and more.
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Learn MoreReverse NS API lets you see the list of domain names tied to the same nameserver via API calls with outputs in JSON and XML.
Get started500 free API credits. No credit card required.
A reverse NS API is a data consumption model that returns a list of domains connected to a nameserver used as an input. It can help understand if a nameserver is dedicated to a single individual or organization or if it is shared among several hosts.
Reverse NS API results come from a massive database that is updated every week. The database contains multi-billion DNS records, including billions of NS records.
There is no need to worry about compatibility issues with reverse NS API. Our nameserver records come in well-known and widely used formats, including XML and JSON.
You may not be able to reach your target audience when you share nameservers with domains that are involved in malicious activities. Avoid getting blacklisted by using Reverse NS API to see what domains you share nameservers with.
Our passive DNS database covers all the connections between NS records and billions of domains and subdomains.
Request a QuoteOur APIs are available in an enhanced version that offers better performance with a dedicated load balancer and a premium endpoint to enable faster throttling for large-scale API deployments.
Learn moreWant to allocate resources better across all our APIs? Our various annual subscription packages are advantageous if you are looking for multiple sources of domain and IP intelligence with the best value.
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