2.0.0 • Public • Published

AS207111 Whois for JavaScript

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Geolocation, Proxy, VPN or Tor exit address detection, for free.

AS207111 provides a free Whois service for content customization, advertising, digital rights management, compliance, fraud & proxy detection, security and more.

You will always have the most accurate location data available for every API request, without having to worry about maintaining a local database. For Proxy, VPN or Tor exit address detection, we use machine learning & probability theory techniques using large datasets from different sources with 11,500+ networks from 2,200+ privacy providers.


The recommended way to install AS207111 Whois is through NPM.

npm install @as207111/whois --save

Getting Started

First, request a free api access token from https://whois.as207111.net to get access to all api features, including all premium features, like privacy lookups.

Then initialize a new client with your API Access Token and call the lookup method to lookup any IPv4 or IPv6 address.

We recommend using the client only server-side, so that your API access token is not exposed.

import {Client} from "@as207111/whois";

// instantiate a new api client with your api acces token
const client = new Client("xxx|xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");

// lookup a given ipv4 or ipv6 address
const response = await client.lookup("2001:67c:770::");

// display the response

API Response Reference

  "ip": "2001:67c:770::1",
  "city": "Cologne",
  "postal": "50733",
  "region": "NW",
  "country": "DE",
  "lat": 50.9655,
  "lon": 6.95378,
  "timezone": "Europe/Berlin",
  "asn": {
    "asn": 207111,
    "name": "PREUSS-AS",
    "isp": "Rene Preuss",
    "network": "2001:67c:770::/48"
  "company": {
    "name": "Rene Preuss"
  "privacy": {
    "proxy": false,
    "hosting": false,
    "mobile": false


I would like to thank the following contributors who are working on the active development of whois-js.

@ghostzero @officialpiyush

AS207111 Sponsors

I would like to extend my thanks to the following sponsors for funding AS207111. If you are interested in becoming a sponsor, please visit my Ko-fi page.

Premium Partners

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npm i @as207111/whois

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  • ghostzero