IP Lookup

Overview

IP Lookup is an IP geolocation API, the GeoIP or IP info lookup behind localisation, fraud checks and compliance routing. It works by querying the IP address against a geolocation database and returning structured location data — country, region, city, coordinates, postal code, timezone and continent — plus the coordinate accuracy radius and whether the country is in the European Union.

Live Test IP Lookup API →

Endpoint

One host, one path per API. The block below shows this call in four languages; every one of them is the same HTTP request. Making requests covers the timeouts, retries and parameter rules that apply to all of them. The SDKs wrap the same call in a typed client.

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curl "https://api.apiverve.com/v1/iplookup?ip=173.172.81.20" \
  -H "x-api-key: your_api_key_here"

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const res = await fetch('https://api.apiverve.com/v1/iplookup?ip=173.172.81.20', {
  headers: { 'x-api-key': 'your_api_key_here' },
});

if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);

const { data } = await res.json();
console.log(data);

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import requests

res = requests.get(
    "https://api.apiverve.com/v1/iplookup?ip=173.172.81.20",
    headers={"x-api-key": "your_api_key_here"},
    timeout=15,
)
res.raise_for_status()

print(res.json()["data"])

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package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/iplookup?ip=173.172.81.20", nil)
	req.Header.Set("x-api-key", "your_api_key_here")

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	out, _ := io.ReadAll(res.Body)
	fmt.Println(string(out))
}

Replace your_api_key_here with the key from your dashboard. When the inputs arrive as a list rather than one at a time, batch requests run up to 200 of them through this same API in a single call.

Authentication

Send your key in the x-api-key header. That is the only auth step — there is no token exchange and no per-endpoint scope to configure. Authentication covers creating, rotating and revoking keys.

Parameters

Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them.

Response

Every API returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape. Response format covers the envelope, the other output formats and how premium fields are withheld.

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{
  "status": "ok",
  "error": null,
  "data": {
    "ip": "173.172.81.20",
    "country": "US",
    "countryName": "United States",
    "region": "MO",
    "regionName": "Missouri",
    "city": "Kansas City",
    "continent": "NA",
    "continentName": "North America",
    "timezone": "America/Chicago",
    "coordinates": [
      39.0831,
      -94.5853
    ],
    "postalCode": "64106",
    "accuracyRadius": 20,
    "isEU": false,
    "asn": "AS11427",
    "asnName": "TWC-11427-TEXAS"
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change. Error handling covers the full status list and which of them are worth retrying.

Start from a template

A working app built on this API, ready to deploy with your own key. Vercel asks for the key when you deploy; the code is on GitHub to change first.

IP Lookup

Find where an IP address is: city, region, timezone and network, for any IP or your visitor’s own.

• Next.js
• React

Deploy to VercelSee the template →

Use cases

Localized Content Routing

E-commerce storefronts inspect incoming visitor IP addresses to set default languages and display regional offers matched to the country and timezone.

Account Takeover Detection

To flag suspicious logins, fraud engines compare the incoming IP's country and autonomous system number against the customer's known sign-in history.

Geo-Restricted Media Delivery

When a viewer requests video playback, streaming services read the country code to enforce territorial broadcasting rights and block unauthorized regions.

Ad Click Verification

Audit advertising traffic by matching visitor coordinates and autonomous system details against publisher placement records to filter bot farm activity.

Other ways to use IP Lookup

Set up IP Lookup on APIVerve, or reach the same source a different way. Your APIVerve account and credits work on all of them — one key, one balance.

Related

More in Networking: