Choosing the right IP geolocation API can make or break your application's accuracy and performance. In this guide, we compare the best free IP geolocation APIs available in 2026, looking at accuracy, speed, rate limits, and ease of integration.

What to Look For in an IP Geolocation API

Before diving into the comparison, here are the key factors that matter:

Accuracy — How precise is the geolocation data? Country-level is easy; city-level is where APIs differ.
Speed — Latency matters. Sub-millisecond lookups mean your users never wait.
Free tier limits — How many requests can you make without paying?
Data fields — Does the API return just country, or also city, ISP, ASN, timezone, and connection type?
VPN/proxy detection — Can it identify masked IPs? This is critical for fraud prevention.
Uptime and reliability — Is the service consistently available?

The Top Free IP Geolocation APIs

1. Iploc

Iploc is a newer entrant that differentiates through multi-source data fusion. Instead of relying on a single data provider, it merges DB-IP, IPinfo, RIR delegation files, BGP routing data, and RFC 8805 geofeeds into a proprietary database.

Free tier: 1,000 requests/day (30,000/month), all fields included Speed: Sub-millisecond lookups (in-memory binary search) Data fields: Country, region, city, postal, lat/lng, timezone, ISP, ASN, connection type, confidence scores VPN detection: Included on all tiers API format: REST JSON with API key authentication

curl -H "Authorization: Bearer YOUR_KEY" https://api.iploc.ai/v1/8.8.8.8

Pros: All fields on free tier, VPN detection included, sub-ms latency, MCP server for AI agents Cons: Newer service, smaller community

2. ipinfo.io

One of the most popular IP geolocation APIs with a clean, developer-friendly design.

Free tier: 50,000 requests/month Data fields: Country, region, city, postal, lat/lng, timezone, ISP, ASN VPN detection: Paid plans only

Pros: Generous free tier, well-documented, client libraries Cons: No VPN detection on free tier, privacy fields require paid plan

3. ip-api.com

A free API that doesn't require authentication for basic usage.

Free tier: 45 requests/minute (HTTP only for free) Data fields: Country, region, city, lat/lng, timezone, ISP, ASN VPN detection: Not available

Pros: No API key needed for HTTP, simple setup Cons: HTTP-only on free tier (no HTTPS), per-minute rate limiting, no VPN detection

4. ipapi.co

Offers a straightforward REST API with multiple output formats.

Free tier: 1,000 requests/day Data fields: Country, region, city, postal, lat/lng, timezone, ASN, currency VPN detection: Not available

Pros: Multiple formats (JSON, XML, CSV, YAML), includes currency data Cons: No VPN detection, limited ISP data on free tier

5. Abstract IP Geolocation

A clean API focused on developer experience with good documentation.

Free tier: 20,000 requests/month Data fields: Country, region, city, postal, lat/lng, timezone, ISP, connection type VPN detection: Included

Pros: VPN/proxy/tor detection on free tier, clean docs Cons: Higher latency, less granular data

Comparison Table

API	Free Limit	VPN Detection	Speed	All Fields Free
Iploc	1K/day	Yes	<1ms	Yes
ipinfo.io	50K/month	No	~50ms	No
ip-api.com	45/min	No	~30ms	Yes
ipapi.co	1K/day	No	~100ms	Partial
Abstract	20K/month	Yes	~200ms	Yes

Which API Should You Choose?

For maximum free requests: ipinfo.io (50K/month)
For VPN detection on free tier: Iploc or Abstract
For lowest latency: Iploc (sub-millisecond in-memory lookups)
For no-signup quick testing: ip-api.com (no API key needed)
For AI agent integration: Iploc (built-in MCP server)

Getting Started with Iploc

Create a free account
Copy your API key from the dashboard
Make your first request:

import requests

response = requests.get(
    "https://api.iploc.ai/v1/8.8.8.8",
    headers={"Authorization": "Bearer YOUR_API_KEY"}
)
data = response.json()
print(f"Country: {data['data']['country_name']}")
print(f"City: {data['data']['city']}")

All geolocation fields are included on the free tier — no feature gating, no credit card required.

Best Free IP Geolocation APIs in 2026