ArulJohn.com IP — Simple Free IP Address Lookup API (No Key)

TL;DR

ArulJohn.com IP is a lightweight API that takes an IP address and returns its geographic location, ISP, and connection type in clean JSON format. Pass any IPv4 address as a path parameter and get back city, region, country, latitude/longitude, timezone, and organization data. No registration, no API key, no rate limits — just a simple lookup.

Quick start: https://api.aruljohn.com/ip/8.8.8.8

No API key needed — just make a request!

Try it now — lookup Google DNS (8.8.8.8): https://api.aruljohn.com/ip/8.8.8.8

Try This URL Now

How to Use This API

1. Lookup a Specific IP

Replace the IP in the URL path with any public IPv4 address:

https://api.aruljohn.com/ip/8.8.8.8

Returns JSON: city, country, country_code, region, latitude, longitude, isp, org, timezone, and asn.

2. Get Your Own Public IP Info

If you want to check your own public IP, you can also use the /json endpoint:

https://api.aruljohn.com/ip/json

3. JavaScript — Lookup and Display Location

const ip = '8.8.8.8';
fetch(`https://api.aruljohn.com/ip/${ip}`)
  .then(res => res.json())
  .then(data => {
    console.log(`Location: ${data.city}, ${data.country}`);
    console.log(`ISP: ${data.isp}`);
    console.log(`Coordinates: ${data.latitude}, ${data.longitude}`);
  });

4. Python — Batch IP Lookups

import requests

ips = ['8.8.8.8', '1.1.1.1', '208.67.222.222']
for ip in ips:
    resp = requests.get(f'https://api.aruljohn.com/ip/{ip}')
    data = resp.json()
    print(f"{ip} -> {data.get('city', '?')}, {data.get('country', '?')}")

Frequently Asked Questions

Do I need an API key?: No. The API is completely public with no authentication required.
What information does the response include?: The JSON response includes: ip, city, region, country, country_code, latitude, longitude, isp, org, asn, timezone, and connection type.
Can I lookup private/internal IPs?: Private IP addresses (192.168.x.x, 10.x.x.x, 172.16.x.x) will not return useful geolocation data since they are not publicly routable.
What format does the API return?: JSON by default. There is also an alternate /json format endpoint for getting your own public IP information.
Are there any rate limits?: No documented rate limits. The API is designed for reasonable personal and development use.
Can I use this in production?: Yes, but for high-volume production use cases, consider reaching out to the maintainer or using a service with SLA guarantees.

API Details

API URL: https://api.aruljohn.com/ip/{ip}
Documentation: api.aruljohn.com
Category: Development
Authentication: Not Required
Geographic Coverage: Global — all public IPv4 addresses

What You Can Build

Visitor location tracker for analytics dashboards
IP reputation checker that cross-references with ISP data
Geographic access control — restrict content by country code
VPN detection tool comparing reported location with expected regions
Network diagnostics page showing your public IP and ISP details