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.
Enjoy priority data access with our premium API services topped with extra perks including dedicated team support, enterprise-grade infrastructure, and SLAs for full scalability and high performance.
Multi-Level API User Administration Now Available - Manage individual API keys for team members in your organization.
Learn MoreA DNS lookup API call gives you a domain’s corresponding IP address from its A record as well as the domain’s mail server (MX record), nameserver (NS record), SPF (TXT record), and more records.
Get started500 free credits. No credit card required.
Learn more about a domain’s owner from his available Domain Name System (DNS) information. Find the IP address, mail server, nameserver, and other DNS-related information of domains by letting DNS Lookup API gather A, mail exchanger (MX), NS, SPF/TXT, and other records.
DNS Lookup API is a RESTful API that can be easily integrated into pre-existing systems and processes. We also provide multiple client libraries with code samples for all commonly-used programming languages to speed up integration.
Even more violent than spam is the dreaded DDoS attack, which is basically a security attack on your website from dozens or even hundreds of IP address simultaneously. If you suddenly notice an unusual amount of traffic, then you may want to conduct a DNS lookup and get to the root of it before it becomes a problem, especially if the traffic is originating from a group of similar IP addresses.
Better manage spam attacks from a given web server or IP address. When spammers attack your site repeatedly, you can obtain the attackers’ IP addresses via a DNS lookup tool and more information about the DNS infrastructure in use.
Pen testers and researchers can use DNS data to expand their knowledge of an organization’s online properties. From there, they can begin to understand the bigger picture and reduce potential attack surfaces.
DNS entries can help you determine the companies that your competitors are currently working with and might be relevant for you to approach as part of your business development efforts.
Our database contains information on billions of domains and subdomains, enabling you to gather all available historical DNS data points you may be interested in.
Request a Quote“WhoisXML was the game changer for us. It has revolutionized our ability to disrupt cybercrime in process and at scale by quickly identifying all of the vendors providing material support for scammers using sophisticated website templates that look legitimate. By quickly identifying the vendors unknowingly supporting the criminals, we can provide them with public interest justification to burn down the criminal infrastructure.”
Our 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 moreShift to an annual API access subscription package that matches your enterprise needs and budget. We offer various tiers according to your desired number of queries for each API.
Learn moreGet free access to our API. 500 free credits monthly. No credit card required.
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