Whois API, Whois XML API

Hosted Whois API Webservice Provides consistent, well-structured whois data in XML & JSON. Keeps the most updated, accurate whois data accessible to your application 24/7. Satisfies your application's requirement for high-volumn and high traffic whois lookup without getting choked by the whois registrars

Whois Database Download
Provide historic Whois Database download in both parsed and raw format as csv files

Domain Availability API is the most accurate domain availability checker available to the public. Checks wheather a domain is available to be registered and returns result in XML/JSON.

Bulk Whois Lookup
use our fast-track service or software to check domain names and collect parsed whois data in bulk

Whois API Software Package
Use the exact same technology we are using for "Hosted Whois Webservice", this is the right choice for you if you believe you have the necessary infrastructure and support power to run our whois webservice in house.

Domain Name Management
Register your domain name

Registrar Whois Service
Setup and manage whois servers for registrars and businesses. Outsource part or all of whois services and other domain management services to us. Provide consulting on all your whois and domain management needs.

About Whois API - Hosted Whois Webservice

Whois API Hosted Webservice returns well-parsed whois fields to your application in popular formats(XML&JSON) per http request. Leave all the hard work to us, you need not worry about the query limit & restrictions imposed by the whois registrars. Register your free developer account now to get your first 500 whois lookups for free. See pricing chart for advanced offerings or Order now

Possible applications and usages:

Tracking domain registrations
Checking domain name availability
Advanced Whois web pages
Detecting (credit card) fraud
Investigating spam, fraud, intrusions, and other online misbehavior
Researching Internet infrastructure and usage
Locating users geographically
Much more... The possiblities are limitless

Key Features:

Automatically follows the whois registry referral chains until it finds the correct whois registrars for the most complete whois data
Utilize our powerful infrastructure and smart mechanism to avoid the query limits imposed by whois registrars on you
Exceptionally robust whois parser that parses a variety of freeform whois data into well-structured fields(in XML and JSON) that your application can read.
- The intelligent parser we deploy is very fault tolerant, for example, it is able to parse out the name, organization, street, city, state/province, postal code, phone number, and fax from a freeform human-written contact address. See the example data capture below. Or try the whois look demo above.
- Parsing support for all whois registrars, constantly tested and improved
- Strips out header and footer text for a clean display of the whois data
Works over basic HTTP, thus avoiding firewall-related problems of accessing Whois servers on port 43
Returns an indication of whether a domain is available
Returns registry dates(created date, updated date, and expires date) in their original format and normailzed format

Alternatively, you may host your own WhoisAPI webservice in house by purchasing a software license if you have the infrastructure and know-how.

a unified, consistent Whois API and Whois Parser System

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About Whois API - Hosted Whois Webservice