WHOIS Lookup - Free Tool

Interactive intelligence tool

Run the check, then ship the workflow

Use the browser tool for a fast answer, then move the same logic into scripts, monitoring, or product flows when it becomes repeatable.

1

Start with the live form

Enter a domain, URL, IP, email, or record and get a focused result without setup.

2

Review decision-ready signals

Outputs highlight statuses, risks, records, and next actions instead of raw provider noise.

3

Automate the winning workflow

Use the request and response examples to turn a one-off check into an API call or recipe.

What this tool helps you decide

Each page is shaped around a practical operational question, not just a raw lookup.

Signal

See the current DNS, registration, security, pricing, or reputation evidence.

Context

Compare the result with related checks so the next move is easier to trust.

Action

Copy examples, open linked tools, or move into API documentation when you need scale.

Trust signals before you integrate

Transparent docs, authenticated requests, and visible reliability details make it easier to evaluate DomScan before you ship.

Uptime API artifacts

OpenAPI, Swagger, Postman, CLI, SDK, and MCP links are one click away.

API keys Protected access

Authenticated endpoints use API keys with clear credit costs before you call them.

Free allowance Sign Up for Free

Start with 10,000 monthly credits and upgrade only when usage grows.

Active Example Request

Start from the curl and HTTP samples, then map the parameters into your application code.

Key Features

WHOIS Lookup

WHOIS is a protocol for querying databases that store registered domain name information. It reveals the domain registrant, registration and expiration dates, nameservers, and registrar details.

Domain Profile Viewer - WHOIS/RDAP Normalized Profile | DomScan

RDAP (Registration Data Access Protocol) is the modern replacement for WHOIS. It provides structured JSON responses, better internationalization support, and more consistent data formats across registrars.

Lookup WHOIS

Yes! Use GET /v1/whois?domain=example.com to query WHOIS data via API. Our API parses RDAP data and provides normalized, structured responses.

Example Request

Example Request http

GET /v1/whois?domain=example.com

Example Response

Example Response json

{
  "domainName": "example.com",
  "registrar": "Example Registrar"
}

Built from the same API surface

The browser experience previews DomScan's structured endpoints, so teams can validate a use case before writing code.

Open API docs All Tools

Frequently Asked Questions

What is WHOIS?

WHOIS is a protocol for querying databases that store registered domain name information. It reveals the domain registrant, registration and expiration dates, nameservers, and registrar details.

Why is WHOIS information sometimes hidden?

Many domain registrars offer WHOIS privacy protection that masks personal information. GDPR and other privacy regulations have also led to redacted WHOIS data for domains registered by individuals.

What's the difference between WHOIS and RDAP?