Questions about DNS Lookup Use | DNS Lookup API | WhoisXML API
Products APIs Data Feeds Web Tools Domain Research & Monitoring Enterprise Packages
WHOIS / WHOIS History
WHOIS / WHOIS History

Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.

DNS / DNS History
DNS / DNS History

Look into all current and historical DNS / IP connections between domains and A, MX, NS, and other records. Monitor suspicious changes to DNS records.

IP Geolocation / IP Netblocks
IP Geolocation / IP Netblocks

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.

Domain Research Suite (DRS)
Domain Research Suite (DRS)

Access our web-based solution to dig into and monitor all domain events of interest.

Domain Research Suite (DRS)
Domain Research Suite (DRS)

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.

Research
Monitoring
White-Label
Enterprise API Packages
Enterprise API Packages

Our complete set of domain, IP, and DNS intelligence available via API calls as an annual subscription with predictable pricing.

Security Intelligence (SI) Suite
Security Intelligence (SI) Suite

Offers complete access to WHOIS, IP, DNS, and subdomain data for product enrichment, threat hunting and more.

Premium API Services
Premium API Services

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.

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FAQs

What exactly does a DNS lookup return?

A DNS lookup using our tools can give you insights on the records associated with the queried domain name. It returns the A record (IP address), mail server (MX records), the nameserver (NS records), SPF (TXT) records, and other Domain Name System (DNS) records.

How comprehensive is DNS Lookup?

Our DNS database is one of the most exhaustive in the world. We have tracked more than 2.3 billion domains and subdomains, and so our database contains over 25 million+ mail exchanger (MX) records and 58 million+ NS records. More records are added as we update the database every day. We also cover 99.5% of all IP addresses in use.

What TLDs do you support?

We cover 7,596+ top-level domains (TLDs) among which are generic (gTLDs) and country-code (ccTLDs).

Do you offer a free DNS Lookup trial?

You can make 500 DNS lookup calls for free when you sign up. You can get started here.

How much does using DNS Lookup cost?

We have different pricing plans depending on your chosen subscription type. While you can purchase a set number of API credits and use them anytime, you can also sign up for a monthly or yearly subscription at a lower cost per query. Visit our pricing page to see the detailed pricing information.

How does DNS Lookup API work?

We provide a DNS lookup RESTful API, which was developed explicitly for server-to-server communication. When a DNS lookup is performed, your system and the WhoisXML API network communicate with each other using the HyperText Transfer Protocol (HTTP) or HTTP Secure (HTTPS) protocol. We then deliver the results in JavaScript Object Notation (JSON) or Extensible Markup Language (XML) format.

Can I check the status of DNS Lookup API?

We strive to be transparent in terms of service delivery. As such, we have an API status page where you can do a real-time check on each of our API products' status and performance, including DNS Lookup API.

Who can use DNS Lookup?

Our DNS lookup services are useful for security teams who wish to enrich their network’s protection against threats such as distributed denial-of-service (DDoS) and spam attacks. Researchers and pen testers can also use DNS Lookup to understand their organization’s online infrastructure, enabling them to identify attack vectors.

How different is your DNS Lookup from other solutions?

Our DNS lookup database is comprehensive, regularly updated, and accessible via different consumption models to suit the needs of various organizations. If you want to integrate DNS Lookup into your systems or products, you can easily do so with our API. We also offer DNS Database Download for teams who want to study and analyze web infrastructure offline.

I am new to DNS concepts, is there a useful resource to familiarize myself with the key aspects?

Yes, check our Domain Name System Primer for an overview and explanation of important concepts and what DNS data entails.