# 51Degrees, free: IP geolocation API

> Retrieve geolocation, ISP, and network data for fraud prevention, personalization, and geographical restrictions.

51Degrees' Free plan for the IP geolocation API costs $0.00 per 1,000 IP addresses. We check each provider's docs for 8 fields. 51Degrees' docs list 2: Country, Coordinates.
We haven't run 51Degrees through [our IP geolocation API benchmark](https://datacircle.dev/best-ip-geolocation-api.txt) yet.
This plan is free. We rank 429 plans for IP geolocation APIs by price. Half the plans cost $0.214 or less per 1,000 IP addresses. [149 IP geolocation API plans on our price sheet are free.](https://datacircle.dev/best-ip-geolocation-api.txt) [Apixies' free plan](https://datacircle.dev/ip-geolocation-apis/apixies/free-sandbox-no-account/llms.txt) scores highest of the free plans in our benchmark, at 89.6 out of 100.
[IPWho.org's $99 monthly plan](https://datacircle.dev/ip-geolocation-apis/ipwho-org/99-monthly-enterprise-get-ip-ip/llms.txt) is the cheapest paid plan per 1,000 IP addresses, with no charge per call. You get as many IP addresses as IPWho.org's rate limit allows. [Api.co.id's Rp19,000 monthly plan](https://datacircle.dev/ip-geolocation-apis/api-co-id/rp19000-monthly/llms.txt) costs the least for 10,000 IP addresses a month: about $1.05.
[Api.co.id's Rp99,000 (about $5) monthly plan](https://datacircle.dev/ip-geolocation-apis/api-co-id/rp99000-monthly/llms.txt) covers any number of IP addresses, and costs less up front than IPWho.org's $99 monthly plan.
[Apixies](https://datacircle.dev/ip-geolocation-apis/apixies/free-sandbox-no-account/llms.txt), [getmyip.pro](https://datacircle.dev/ip-geolocation-apis/getmyip-pro/free-getmyip-get-v1-ip/llms.txt) and [IPFlare](https://datacircle.dev/ip-geolocation-apis/ipflare/16-80-monthly-unlimited-get-ip/llms.txt) are the best IP geolocation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/ip-geolocation-apis/51degrees/free
- [IP geolocation API in 2026: the best of 20+ compared](https://datacircle.dev/best-ip-geolocation-api.txt)
- Get it: https://51degrees.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- Request: Docs behind sign-up
- API key: with the plan, on https://51degrees.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- Its API docs: https://51degrees.com/documentation/_ip_intelligence__overview.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- Sold by: 51Degrees (https://51degrees.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing)
- Checked: 2026-11-11

## In the answer

- Completeness: 25%
- Country: ✓
- Coordinates: ✓

## Price

- $ per 1,000 IP addresses: $0.00
- Per: call
- Billing: free

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Retrieve geolocation, ISP, and network data for fraud prevention, personalization, and geographical restrictions.

## Data

- Freshness: 1 month
- Keep data: no limit
- Use data: 2.2 You shall: [...] 2.2.2 use the Cloud Services solely for your own internal business purposes or, if you are an agency, developer or other service provider using the Cloud Services for, or on behalf of, your client, solely for that client's internal business purposes [...] 2.3 You shall not: 2.3.1 exceed the number of permitted Requests set out in an Order, nor 2.3.2 perform any batch or offline processing using the Cloud Services and shall only use those services in connection with real-time Requests (via web or client applications) only.

## Plan

- Pay: €0
- You get: 10,000 requests a month
- Enough for: 10,000 calls a month

## Speed

- Answer: in the call

## The call

- You send: Docs behind sign-up

## About the plan

- Plan: Free
- Who can get it: traders only: "We only wish to contract with traders, within the meaning of section 2 of the Consumer Rights Act 2015"

## The 3 fields the plan's answer can hold

IP address, country, location confidence

## 51Degrees' plans (5)

- [51Degrees, free](https://datacircle.dev/ip-geolocation-apis/51degrees/free/llms.txt): $0.00 per 1,000, 25% complete, 1 month
- [51Degrees, €49 monthly](https://datacircle.dev/ip-geolocation-apis/51degrees/49-monthly/llms.txt): $0.551 per 1,000, 25% complete, 1 day
- [51Degrees, €360 monthly](https://datacircle.dev/ip-geolocation-apis/51degrees/360-monthly/llms.txt): $0.405 per 1,000, 38% complete, 1 day
- [51Degrees, €680 monthly](https://datacircle.dev/ip-geolocation-apis/51degrees/680-monthly/llms.txt): $0.153 per 1,000, 38% complete, 1 day
- [51Degrees, contact us](https://datacircle.dev/ip-geolocation-apis/51degrees/contact-us/llms.txt): 88% complete, 1 day

## 51Degrees' calls (1)

- Docs behind sign-up: [51Degrees, free](https://datacircle.dev/ip-geolocation-apis/51degrees/free/llms.txt)

## 51Degrees' APIs (2)

- [51Degrees IP geolocation API pricing, 5 plans](https://datacircle.dev/ip-geolocation-apis/51degrees/free/llms.txt)
- [51Degrees IP company lookup API pricing, 1 plan](https://datacircle.dev/ip-company-lookup-apis/51degrees/contact-us/llms.txt)

## 51Degrees: IP geolocation API alternatives

[51Degrees alternatives: other IP geolocation API providers by price](https://datacircle.dev/51degrees-alternatives.txt)

We list 51Degrees' cheapest paid plan first. Next we list other providers' plans closest to 51Degrees in price per 1,000 IP addresses. Each plan in the list gives live data or data at most a day old.

- [51Degrees, €680 monthly](https://datacircle.dev/ip-geolocation-apis/51degrees/680-monthly/llms.txt): $0.153 per 1,000, 38% complete, 1 day
- [ipify, $79 monthly, Monthly subscription: 1,000,000 Credits per month, GET /api/v2/country,city](https://datacircle.dev/ip-geolocation-apis/ipify/79-monthly-monthly-subscription-1000000-credits-per-month-get-api-v2-country-city/llms.txt): $0.158 per 1,000, 88% complete, 1 day
- [ApogeoAPI, $79 monthly](https://datacircle.dev/ip-geolocation-apis/apogeoapi/79-monthly/llms.txt): $0.158 per 1,000, 50% complete, 1 hour
- [Abstract API, $385 yearly](https://datacircle.dev/ip-geolocation-apis/abstract-api/385-yearly/llms.txt): $0.16 per 1,000, 88% complete, 1 day
- [BigDataCloud, $19,990 yearly, Gold, GET /data/ip-geolocation-full](https://datacircle.dev/ip-geolocation-apis/bigdatacloud/19990-yearly-gold-get-data-ip-geolocation-full/llms.txt): $0.167 per 1,000, 100% complete, 1 day

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-11.

- https://51degrees.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://51degrees.com/developers/ip-tester?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://51degrees.com/documentation/_ip_intelligence__overview.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://51degrees.com/documentation/index.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://51degrees.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://51degrees.com/terms/cloud-services-terms/20261106?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://51degrees.com/terms/free/20261106?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://51degrees.com/terms/general-terms-and-conditions/20261019?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://github.com/51Degrees/ip-intelligence-dotnet?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing