Making requests | Documentation | WHOIS History 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.

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Making requests Output format Error codes
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Making requests

GET https://whois-history.whoisxmlapi.com/api/v1?apiKey=YOUR_API_KEY&domainName=google.com&mode=purchase
POST https://whois-history.whoisxmlapi.com/api/v1
It takes up to a minute to activate your account after the registration.

POST request body sample

{
    "apiKey": "API_KEY",
    "domainName": "google.com",
    "mode": "purchase"
}

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 My products page.
domainName

Required. The domain for which historic WHOIS data is requested.
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 50 DRS credits.

Acceptable values: preview | purchase

Default: preview
outputFormat

Optional. Response output format.

Acceptable values: JSON | XML

Default: JSON
sinceDate

Optional. 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.

Acceptable values: date in "YYYY-MM-DD" format.
createdDateFrom

Optional. If present, search through domains created after the given date.

Acceptable values: date in "YYYY-MM-DD" format.
createdDateTo

Optional. If present, search through domains created before the given date.

Acceptable values: date in "YYYY-MM-DD" format.
updatedDateFrom

Optional. If present, search through domains updated after the given date.

Acceptable values: date in "YYYY-MM-DD" format.
updatedDateTo

Optional. If present, search through domains updated before the given date.

Acceptable values: date in "YYYY-MM-DD" format.
expiredDateFrom

Optional. If present, search through domains expired after the given date.

Acceptable values: date in "YYYY-MM-DD" format.
expiredDateTo

Optional. If present, search through domains expired before the given date.

Acceptable values: date in "YYYY-MM-DD" format.

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.