Making requests | Documentation | Brand Alert API | WhoisXML API
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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.

Threat Intelligence Analysis
Threat Intelligence Analysis

Carry a complete threat intelligence analysis for a given domain or IP address and get access to a report covering 120+ parameters including IP resolutions, website analysis, SSL vulnerabilities, malware detection, domain ownership, mail servers, name servers, and more.

Threat Intelligence APIs
Threat Intelligence APIs

Gather threat intelligence via API calls covering Domain’s Infrastructure analysis, SSL Certificates Chain, SSL Configuration Analysis, Domain Malware Check, Connected Domains, and Domain Reputation Scoring.

Threat Intelligence Data Feeds
Threat Intelligence Data Feeds

Bolster enterprise security with our feeds covering Typosquatting domains, Disposable domains, Phishing URLs, Domain & IP reputation, Malicious URLs, Botnet C&C, and DDoS URLs.

Custom development

We offer comprehensive services for the integration of our data – from consultations to the precise definition of the basic needs of the business to increase the work efficiency.

Registrar WHOIS Services

Set up and manage public WHOIS servers for your business. Our WHOIS parsing system is a utility that collects extensive information about any given domain by sending series of DNS and WHOIS queries. The report is generated in raw as well as in parsed format.

Support services

Regardless of whether you are a startup, a small business or a global one, our team is always ready to help you. Enterprises operating on a scale can also choose special premium support management with high priority 24/7 email and telephone responses and other professional services.

Internet Statistics Reports

Get customized reports on TLDs covering datasets falling under domain name, WHOIS and DNS category.

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Making requests Output format Error codes
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Making requests

API endpoint

POST https://brand-alert.whoisxmlapi.com/api/v2
It takes up to a minute to activate your account after the registration.

Postman collection

Postman is a desktop and web application that allows you to make requests to an API from a graphical user interface. We recommend using Postman with WhoisXML APIs endpoints when exploring the APIs functionality, as well as when you are troubleshooting issues with your application.

The WhoisXML API Postman collection is available at the following links:

The collection includes a preconfigured environment. You will need to set up the api_key variable to fire each request. Get your personal API KEY on the My products page. If you have questions related to the API, you can ask them here: https://main.whoisxmlapi.com/contact-us

POST request body sample

{
    "apiKey": "YOUR_API_KEY",
    "sinceDate": "2023-03-19",
    "mode": "purchase",
    "withTypos": false,
    "responseFormat": "json",
    "punycode": true,
    "includeSearchTerms": [
        "google",
        "blog"
    ],
    "excludeSearchTerms": [
        "analytics"
    ]
}

Headers

X-Authentication-Token

You can use this header or apiKey parameter for API calls.

Get your personal API KEY on My products page.

Input parameters

apiKey

Required. Get your personal API KEY on the My products page.
includeSearchTerms

Required. Array of search terms. All of them should be present in the domain name. Maximum 4 items. Case insensitive.
excludeSearchTerms

Optional. Array of search terms. All of them should NOT be present in the domain name. Maximum 4 items. Case insensitive.
sinceDate

Optional. Date in "YYYY-MM-DD" format.

Allowed dates are in the [Today minus 14 days — Today] interval.

Yesterday's date by default.

If present, search through activities discovered since the given date. Sometimes there is a latency between the actual added/renewal/expired date and the date when our system detected this change. We recommend using this field in your monitoring tools for filtering daily changes.
mode

Optional.

preview – return only the number of domains. No credits deducted.

purchase – return the actual list of domains (limited to 10,000). 1 request costs 10 DRS credits.

Acceptable values: preview | purchase

Default: preview
withTypos

Optional. If true, the search terms set will be enriched with their possible typos. For example, for the term 'google', the typos might be: 'goigle', 'gokgle', 'golgle', 'gopgle', 'goglee', 'gooogle' etc.

Acceptable values: false | true

Default: false

With typos included - 1 request costs 300 DRS credits.

Learn more: Typo generation FAQ
punycode

Optional. If true, domain names in the response will be encoded to Punycode.

Acceptable values: false | true

Default: true
responseFormat

Optional. Response output format.

Acceptable values: json | xml

Default: json

Free access

After Sign Up you automatically get a free subscription plan limited to 500 DRS credits.

Usage limits and requests throttling

The maximum number of requests per second is 30. In case that the limit is breached, your subsequent requests will be rejected until the next second.

This API is also available with a dedicated load balancer and premium endpoint to enable faster querying as part of our Premium API Services and Enterprise API Packages.