Reverse WHOIS API | Reverse Whois Lookup (2024)

Simply enter a search term below to see the list of domain names owned by them.

Reverse Whois API

Search our entire WHOIS database through the Reverse Whois API.

https://api.whoxy.com/?key=xxxxx&reverse=whois&identifier=value

Reverse Whois API lets you perform a comprehensive search on our database, to find domains owned by a company or person.
You just need to enter search terms such as the name, email or company, and you can find all the domains they ever owned.
If your search returns no results, you will NOT be charged any API queries. You are charged only on successful queries.

Sample Output: JSON SchemaXML SchemaJSON Live ResultsXML Live Results

Search Identifiers

You must send any one of following search identifiers to search the whois database.

Search by Domain Owner's Name:

https://api.whoxy.com/?key=xxxxx&reverse=whois&name=John+Smith

Search by Email Address:

https://api.whoxy.com/?key=xxxxx&reverse=whois&email=[emailprotected]

Search by Company / Organization Name:

https://api.whoxy.com/?key=xxxxx&reverse=whois&company=Acme+Corporation

Search by Keyword present at start of Domain Name:

https://api.whoxy.com/?key=xxxxx&reverse=whois&keyword=yahoo

Please note that search identifiers are case-sensitive. Owner Name identifier is "". If you send "", it will be ignored.

Search Results Pagination

For faster data transfer, a maximum of 100 results are sent back per API call.
If your search returns more than 100 results, you can fetch remaining records through pages.

https://api.whoxy.com/?key=xxxxx&reverse=whois&identifier=value&page=2 https://api.whoxy.com/?key=xxxxx&reverse=whois&identifier=value&page=3 https://api.whoxy.com/?key=xxxxx&reverse=whois&identifier=value&page=4

Results 1 to 100 will be returned in Page #1, Results 101 to 200 in Page #2, Results 201 to 300 in Page #3, and so on…
Please note that you will be charged with single API credit each time you fetch a Result Page through Reverse Whois API.

Need more than 100 Results?

Fetch up to 1,000 results per API call using the Mini result mode:

https://api.whoxy.com/?key=xxxxx&reverse=whois&identifier=value&mode=mini

In mini mode, you will receive basic contact information like name, company and email.

Sample Output: Mini Mode (JSON)Mini Mode (XML)

Fetch up to 2,500 results per API call using the Micro result mode:

https://api.whoxy.com/?key=xxxxx&reverse=whois&identifier=value&mode=micro

In micro mode, you won't receive any contact information of the domain registrant.

Sample Output: Micro Mode (JSON)Micro Mode (XML)

Fetch up to 50,000 domain names per API call using the Domains Only result mode:

https://api.whoxy.com/?key=xxxxx&reverse=whois&keyword=yahoo&mode=domains

This mode can only be used with the "keyword" search identifier. You will receive the list of domain names as comma-separated values.

Sample Output: Domains Only Mode (JSON)Domains Only Mode (XML)

Retrieving Data in XML Format

Simple add "&format=xml" to your API call and get results in XML Format.

https://api.whoxy.com/?key=xxxxx&reverse=whois&name=John+Smith&format=xml

Kindly use XML format only if your application strictly requires XML data. Compared to lightweight JSON format, XML carries a lot of extra baggage. This results in slower data transmission, and affects the overall performance of your application interacting with our API. We highly recommend you use JSON format whenever possible.

Account Balance Check

You can check your account's API query balance through:

https://api.whoxy.com/?key=xxxxx&account=balance

Sample Output: JSON SchemaXML SchemaJSON Live ResultsXML Live Results

API Status Codes

Every API call will return a Status of either: 0 (ERROR) or 1 (SUCCESS)
In case of Status 0, the reason behind failure of the API call will also be returned.

Sample Output: Invalid API Key (JSON)Invalid API Key (XML)

Pricing & Packages

Reverse Whois Pricing Total API Calls Price CPM Purchase
200 Reverse Whois API Queries 200 $2 $10.00 Order Now
1,000 Reverse Whois API Queries 1,000 $10 $10.00 Order Now
10,000 Reverse Whois API Queries 10,000 $100 $10.00 Order Now
50,000 Reverse Whois API Queries 50,000 $400 $8.00 Order Now
250,000 Reverse Whois API Queries 250,000 $1,500 $6.00 Order Now
1 Million Reverse Whois API Queries 1,000,000 $4,000 $4.00 Order Now
5 Million Reverse Whois API Queries 5,000,000 $10,000 $2.00 Order Now

Frequently Asked Questions

  1. API Key is available through: Account Manager » API Settings
  2. No, you will not be charged any API credits if your Reverse Whois query does not match any WHOIS records.
  3. Depending upon your search query, the results might contain multiple WHOIS records of the same domain name. However all the WHOIS records will be unique, and there will be no duplicate results. We save additional WHOIS record of a domain name only when there are any changes compared to the previous record. This is how we archive historical WHOIS records.
  4. As we do not save Raw Whois text in our database, this is not included with Reverse Whois results.
  5. Yes, this can be activated through: Account Manager » Account Settings
  6. Please signup now and receive FREE API Credits to test the Reverse Whois API.

If you have any questions, please contact us at Reverse WHOIS API | Reverse Whois Lookup (2)

Reverse WHOIS API | Reverse Whois Lookup (2024)

FAQs

What is reverse WHOIS lookup? ›

Reverse Whois is a tool that allows you to search for domains by the name, address, telephone number, email address or physical address of the Registrant listed in current or historical Whois records.

What is the difference between reverse WHOIS and WHOIS? ›

Reverse WHOIS refers to retrieving all the available information about a particular domain name. For example, you can use any detail typically seen on a WHOIS record (e.g., a domain owner's name, company name, email address, etc.) to search for all domain names that have that data point in their WHOIS records.

Does WHOIS have an API? ›

The Whois Lookup API provides the ownership record for a domain name or IP address with basic registration details. The API is optimized to respond quickly and is designed to handle a high volume of parallel requests.

What is the difference between DNS lookup and WHOIS lookup? ›

A Domain Name lookup (also called WHOIS) retrieves the domain registration data, including the domain owner details. There is a difference between a Domain Name Server (DNS) lookup and a Domain Name lookup. A DNS lookup retrieves the IP address associated with a Domain Name.

What is the purpose of reverse lookup? ›

Reverse lookups are commonly used by email servers. Email servers check and see if an email message came from a valid server before bringing it onto their network. Many email servers will reject messages from any server that does not support reverse lookups or from a server that is highly unlikely to be legitimate.

How do you find out what domains a person owns? ›

The Whois database can provide you with details such as a domain's current owner, its availability and its expiration date. With Whois info, you'll be able to check who owns a domain, find the domains that are right for you, and get one step closer to securing them.

Why do hackers use WHOIS? ›

This is typically done by hackers in order to find out more information about their potential target or employer and how they can obtain access to their network remotely.

What information can you retrieve from using WHOIS? ›

Typically, each Whois record will contain information such as the name and contact information of the Registrant (who owns the domain), the name and contact information of the registrar Registrar (the organization or commercial entity that registered the domain name), the registration dates, the name servers, the most ...

What is the purpose of the WHOIS lookup? ›

WHOIS helps to democratize the Internet. Anyone, from businesses and corporations to law enforcement and individual users, can access and use the WHOIS database to find out who is behind a domain name and any associated website.

Can anyone access an API? ›

It's a security measure to help track and control API usage, so only authorized users or applications can access the data. Similar to how you need a password to access your apps, you need an API key to access APIs.

What information is available on WHOIS? ›

WHOIS (pronounced as the phrase "who is") is a query and response protocol that is used for querying databases that store an Internet resource's registered users or assignees. These resources include domain names, IP address blocks and autonomous systems, but it is also used for a wider range of other information.

What does an API owner do? ›

Business API owner

Typical activities performed by business API owners are: Understanding the needs of potential API consumers. Owning the business scope of the API as well as the API's SLA.

What is the difference between reverse IP lookup and reverse DNS lookup? ›

A reverse DNS lookup or reverse IP address lookup is an opposite process that starts with an IP address and ends with the associated domain name or hostname's lookup. Here the user already knows the IP address and wishes to find the domain or hostname associated with that IP.

How do I check my DNS reverse lookup? ›

How to do a reverse DNS lookup
  1. Open the command prompt.
  2. Type nslookup followed by the IP address and press 'Enter. ' For example, it can be nslookup 8.8. 8.8.
  3. Now, the command prompt will return the DNS name and the associated IP you entered.
Jul 12, 2024

What are the benefits of reverse DNS lookup? ›

Basically, a reverse DNS lookup returns the hostname of an IP address. Information about where an IP address came from is useful to B2B companies in particular. When they can track who visits their website, they can translate that data into sales prospects.

How accurate is a reverse address lookup? ›

One of its features is that it provides accurate and up-to-date information about the person living at the current address. You may create targeted and personalized marketing campaigns using a reverse address lookup.

What is reverse IP lookup used to collect? ›

Reverse IP lookup (or reverse domain name service [DNS] lookup or pointer record [PTR] lookup) is the process of looking up the domain name of an IP address. In other words, a reverse IP lookup query determines the domain name an IP address is associated with.

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