Network

Query Domain WHOIS Registration Information

0calls

2 credits / call

Want to know when a domain was registered, who the registrar is, and when it expires? WHOIS information can tell you all of this.

Overview

This is an online WHOIS query tool. You can obtain WHOIS information in two ways:

Default behavior (without parameters): GET /api/v1/network/whois?domain=google.com
- Returns a JSON object, with the whois field as the raw, unprocessed WHOIS text string.
JSON formatted: GET /api/v1/network/whois?domain=google.com&format=json
- Returns a JSON object, with the whois field as a parsed JSON object containing key-value pairs from the WHOIS information.

This way you can get both the most complete raw information and easily process structured data.

Query parameters

domain

stringrequired

The domain name for which you need to query WHOIS information.

format

stringoptional

Return format. Leave blank or set to 'text' to return raw WHOIS text, set to 'json' to return structured JSON.

Name	Type	Attributes	Description
`domain`	string	required	The domain name for which you need to query WHOIS information.
`format`	string	optional	Return format. Leave blank or set to 'text' to return raw WHOIS text, set to 'json' to return structured JSON.

Response

200 / OK

Query successful! Returns raw WHOIS text or structured JSON based on the format parameter.

Format 1

Text Format Response

When format=text or not specified, the whois field contains the raw WHOIS query text. This preserves the most complete information, suitable for scenarios where you need to parse or display raw data yourself.

JSON

Format 2

JSON Format Response

When format=json, the whois field returns a structured JSON object.

Note

Note: The specific fields returned may vary depending on domain registry and privacy protection settings. Some sensitive information may be partially hidden or marked as REDACTED FOR PRIVACY.

JSON

400 / Bad Request

Invalid request parameters. Please check if the domain parameter is provided and formatted correctly.

JSON

404 / Not Found

Query failed or domain does not exist.

JSON

Quick start

Pick your language to see usage examples

Auth mode:

cURL command

curl 'https://uapis.cn/api/v1/network/whois?domain=google.com'

Frequently asked questions

Are there any special restrictions for the Query Domain WHOIS Registration Information API?

Query Domain WHOIS Registration Information follows our standard usage policy. Refer to the endpoint reference above for the exact rate limits and parameter requirements. Reach out if you have unusual needs.

Are the APIs on UAPI free to use?

UAPI gives every visitor free credits so you can call any endpoint right away. Visitor credits have a usage cap, and if you need more you can for additional credits.

Do I need to register an account to use UAPI?

No registration is required for visitor credit calls. If you need more credits or want to manage your call history, you can register a free account. Signed-in users get more free credits and can review usage details in the console.

Which languages and use cases does UAPI support?

Our APIs follow standard HTTP and RESTful design, so any language that can send network requests works — including JavaScript (Node.js, Vue, React), Python, Java, PHP, Go, C#, and more. They fit web apps, mobile backends, mini-program cloud functions, automation scripts, and similar scenarios.

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