# Trustfull, free: IP company lookup API

> Leverage IP geolocation and proxy detection for a wide range of applications, from marketing optimization and real-time risk scoring to fraud detection and security.

Trustfull's Free trial plan for the IP company lookup API costs $0.00 per 1,000 IP addresses. Trustfull's docs list 8 of the 10 fields on our checklist: Owner's name, Owner's domain, Industry, Company size, Country, Region and city, VPN and proxy, Hosting.
We haven't run Trustfull through [our IP company lookup API benchmark](https://datacircle.dev/best-ip-company-lookup-api.txt) yet.
This plan is free. We rank 398 plans for IP company lookup APIs by price. Half the plans cost $0.112 per 1,000 IP addresses or less. [See the best free IP company lookup API plan.](https://datacircle.dev/best-ip-company-lookup-api.txt)
[IPHunter's €99.99 monthly plan](https://datacircle.dev/ip-company-lookup-apis/iphunter/99-99-monthly/llms.txt) is the cheapest paid plan per 1,000 IP addresses. IPHunter's €99.99 monthly plan covers up to 11,520,000 IP addresses a day.
[FreeIPAPI's €9.90 monthly plan (/api/bulk/json)](https://datacircle.dev/ip-company-lookup-apis/freeipapi/9-90-monthly-unlimited-post-api-bulk-json/llms.txt) covers any number of IP addresses. FreeIPAPI's €9.90 monthly plan costs less up front than IPHunter's €99.99 monthly plan.
[DNSlytics](https://datacircle.dev/ip-company-lookup-apis/dnslytics/free/llms.txt), [ipwhois.io](https://datacircle.dev/ip-company-lookup-apis/ipwhois-io/free/llms.txt) and [IPBot](https://datacircle.dev/ip-company-lookup-apis/ipbot/free-anonymous-get-v1-ip-ip/llms.txt) are the best IP company lookup API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/ip-company-lookup-apis/trustfull/free
- [IP company lookup API: the 15 best providers compared](https://datacircle.dev/best-ip-company-lookup-api.txt)
- Get it: https://trustfull.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Request: `POST https://api.fido.id/1.0/ip`
- API key: with the plan, on https://trustfull.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Its API docs: https://docs.trustfull.com/reference/ip-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Sold by: Trustfull (https://trustfull.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 80%
- Owner's name: ✓
- Owner's domain: ✓
- Industry: ✓
- Company size: ✓
- Country: ✓
- Region and city: ✓
- VPN and proxy: ✓
- Hosting: ✓

## Price

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

## Charges

- Also pays for: from the same budget: Trustfull Email · Trustfull Phone · Trustfull Domain · Trustfull Document · Trustfull Login (Score) · Trustfull Login (Enrollment) · Trustfull Session · Trustfull Hub · Phone Validation · Email Disposable · Phone Disposable · Ip Proxy API · Phone Data Breaches · Phone Portability · Phone To Name · Age Estimation

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Leverage IP geolocation and proxy detection for a wide range of applications, from marketing optimization and real-time risk scoring to fraud detection and security.

## Data

- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: €0
- You get: 50 credits
- Enough for: about 1,666 calls, once

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: customer_id, ip, claims "ip". Optional: max_enrichment_time, model_id
- Method: POST
- Path: /ip

## About the plan

- Plan: Free trial
- Who can get it: new accounts

## The 48 fields the plan's answer can hold

IP address, city, connection speed, connection type, country, latitude, longitude, ISP, timezone, request time, ZIP code, mobile, VPN, proxy, proxy name, proxy type, Tor, relay, hosting, score, score cluster, black list count, company domain, company name, company description, company industry, company employees, company founded, company keywords, company annual revenue, company logo, company country, company Twitter URL, company Facebook URL, company LinkedIn URL, company total funding, company tech stack, reason code, identity email count, identity MSISDN count, identity name count, remote desktop enable, XBL count, CSS count, XBL in days, CSS in days, valid format, private internal address

## Trustfull's plans (6)

- [Trustfull, free](https://datacircle.dev/ip-company-lookup-apis/trustfull/free/llms.txt): $0.00 per 1,000, 80% complete
- [Trustfull, €500 pack](https://datacircle.dev/ip-company-lookup-apis/trustfull/500-pack/llms.txt): $33.759 per 1,000, 80% complete
- [Trustfull, €1,000 pack](https://datacircle.dev/ip-company-lookup-apis/trustfull/1000-pack/llms.txt): $33.759 per 1,000, 80% complete
- [Trustfull, €2,500 pack](https://datacircle.dev/ip-company-lookup-apis/trustfull/2500-pack/llms.txt): $33.759 per 1,000, 80% complete
- [Trustfull, €5,000 pack](https://datacircle.dev/ip-company-lookup-apis/trustfull/5000-pack/llms.txt): $33.759 per 1,000, 80% complete
- [Trustfull, contact us](https://datacircle.dev/ip-company-lookup-apis/trustfull/contact-us/llms.txt): 80% complete

## Trustfull's calls for this API (1)

- `POST /ip`: [Trustfull, free](https://datacircle.dev/ip-company-lookup-apis/trustfull/free/llms.txt)

## Trustfull's APIs (5)

- [Trustfull: domain WHOIS API pricing, 6 plans](https://datacircle.dev/domain-whois-apis/trustfull/free/llms.txt)
- [Trustfull: email verification API pricing, 6 plans](https://datacircle.dev/validate-email-apis/trustfull/free/llms.txt)
- [Trustfull: IP company lookup API pricing, 6 plans](https://datacircle.dev/ip-company-lookup-apis/trustfull/free/llms.txt)
- [Trustfull: reverse email lookup API pricing, 6 plans](https://datacircle.dev/reverse-email-lookup-apis/trustfull/free/llms.txt)
- [Trustfull: phone validation API pricing, 6 plans, POST /phone-validation](https://datacircle.dev/validate-phone-apis/trustfull/free-trial-post-phone-validation/llms.txt)
- [Trustfull: phone validation API pricing, 6 plans, POST /phone](https://datacircle.dev/validate-phone-apis/trustfull/free-trial-post-phone/llms.txt)

## Trustfull: IP company lookup API alternatives

- [DomainKits, $149.99 monthly](https://datacircle.dev/ip-company-lookup-apis/domainkits/149-99-monthly/llms.txt): $24.998 per 1,000, 40% complete
- [ipXapi, $29.99 monthly, Basic, GET /api/ip](https://datacircle.dev/ip-company-lookup-apis/ipxapi/29-99-monthly-basic-get-api-ip/llms.txt): $29.99 per 1,000, 60% complete
- [Elioplus, $329 monthly](https://datacircle.dev/ip-company-lookup-apis/elioplus/329-monthly/llms.txt): $32.90 per 1,000, 60% complete, 7 days
- [Retention.com, $199 pack](https://datacircle.dev/ip-company-lookup-apis/retention-com/199-pack/llms.txt): $39.80 per 1,000, 10% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-04.

- https://docs.trustfull.com/docs/billing.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://docs.trustfull.com/docs/data-catalogue-ip.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://docs.trustfull.com/docs/introduction?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://docs.trustfull.com/docs/trustfull-ip.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://docs.trustfull.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://docs.trustfull.com/reference/ip-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://trustfull.com/legal/terms-and-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://trustfull.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing