Reverse Whois Lookup API
Identify All Domains Owned by an Individual or Organisation
Our Reverse Whois Lookup API allows users to find all domains registered by a specific individual or organization, offering insights into domain ownership patterns.
Uncover previously unrelated assets and gain a comprehensive understanding of your internet footprint by identifying all domains registered by a given user or organisation.
Get Started for FreeWhy Choose ViewDNS.info Reverse Whois Lookup API?
- Identify Assets Belonging to Your Organisation
- Constant Updates Ensure Up-To-Date Results
- Identify Relationships Between Domains
- Highly Scalable to meet Business Needs
- Subscription Includes Access to ALL ViewDNS.info APIs
Our Valued Customers Include:

Key Reverse Whois Lookup API Features
Up-to-date Data
Our API leverages a backend that is constantly monitoring domain registration information for hundreds of millions of domain name, ensuring that the most up to date results are available.
Asset Discovery
Our Reverse Whois Lookup API allows for the discovery of potentially unknown assets registered by users in your organisation in order to ensure you have a comprehensive picture of your internet footprint.
Identify Connections
Our API can show connections between domain names previously thought to be unrelated.
Highly Scalable
Our Reverse Whois API employs a highly scalable backend ensuring that even high volume searches are met with the highest success rate.
Usage Details
Finds domain names registered by to an individual or organisation.
/reversewhois GET
https://api.viewdns.info/reversewhois/
Search by email address, domain name, individual name or company name. By default, the first 1,000 results are returned.
Parameters
-
apikey
requiredYour API key associated with your ViewDNS.info account.
-
q
requiredThe registrant name or email address to search for (e.g.,
[email protected]
). -
page
optional (default=1)The page of results to display (e.g. '2' to view results 1,001 to 2,000).
-
output
optional (default=json)The output format required (
'xml'
or'json'
).
Sample Request Live Demo!
https://api.viewdns.info/reversewhois/?q=[email protected]&apikey=demo&output=json
Sample Response
{
"query": {
"tool": "reversewhois_PRO",
"query": "[email protected]"
},
"response": {
"result_count": "12",
"total_pages": "1",
"current_page": "1",
"matches": [
{
"domain": "atheismfacts.org",
"created_date": "2012-08-03",
"registrar": "NAME.COM, LLC"
},
{
"domain": "chibrary.com",
"created_date": "2011-11-13",
"registrar": "NAME.COM, INC."
},
{
"domain": "chibrary.net",
"created_date": "2011-11-13",
"registrar": "NAME.COM, INC."
},
{
"domain": "chibrary.org",
"created_date": "2011-11-13",
"registrar": "NAME.COM, LLC"
},
{
"domain": "geekmelange.com",
"created_date": "2013-04-02",
"registrar": "NAME.COM, INC."
},
{
"domain": "push.cx",
"created_date": "2003-04-24",
"registrar": "NAME.COM LLC"
},
{
"domain": "taskforcetaro.com",
"created_date": "2013-03-11",
"registrar": "NAME.COM, INC."
},
{
"domain": "taskforcetrinity.com",
"created_date": "2012-05-22",
"registrar": "NAME.COM, INC."
},
{
"domain": "thegeekmelange.com",
"created_date": "2013-04-02",
"registrar": "NAME.COM, INC."
},
{
"domain": "thermite.biz",
"created_date": "2016-02-29",
"registrar": "GODADDY.COM, INC."
},
{
"domain": "thermite.info",
"created_date": "2016-02-29",
"registrar": "GODADDY.COM, LLC"
},
{
"domain": "xn----9sbhtprbccqe3c.xn--p1acf",
"created_date": "2017-05-15",
"registrar": "REGIONAL NETWORK INFORMATION CENTER, JSC DBA RU-CENTER"
}
]
}
}
Code Example