# TrustLookup, free: IP company lookup API

> Look up any IPv4 or IPv6 address: where it is, which network owns it (its ASN), and whether it belongs to a VPN, a Tor exit or a hosting provider.

TrustLookup's Free plan for the IP company lookup API costs $0.00 per 1,000 IP addresses. We check each provider's docs for 10 fields. TrustLookup's docs list 2: Owner's name, ASN.
We haven't run TrustLookup through [our IP company lookup API benchmark](https://datacircle.dev/best-ip-company-lookup-api.txt) yet.
This plan is free. We rank 500 plans for IP company lookup APIs by price. Half the plans cost $0.208 or less per 1,000 IP addresses. [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. [ipapi.is's top-up plan](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/top-up-from-1-one-time-credits-post/llms.txt) costs the least for 10,000 IP addresses a month: $1.00.
[Api.co.id's Rp99,000 (about $5) monthly plan](https://datacircle.dev/ip-company-lookup-apis/api-co-id/rp99000-monthly/llms.txt) covers any number of IP addresses. Api.co.id's Rp99,000 (about $5) monthly plan costs less up front than IPHunter's €99.99 monthly plan.
[IPKit](https://datacircle.dev/ip-company-lookup-apis/ipkit/free/llms.txt), [MxToolbox](https://datacircle.dev/ip-company-lookup-apis/mxtoolbox/free-get-api-v1-lookup-asn/llms.txt) and [Enterno](https://datacircle.dev/ip-company-lookup-apis/enterno/free-open-api-get-api-open-ip/llms.txt) are the best IP company lookup API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/ip-company-lookup-apis/trustlookup/free
- [IP company lookup API in 2026: the best of 50+ compared](https://datacircle.dev/best-ip-company-lookup-api.txt)
- Get it: https://trustlookup.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Request: `GET https://api.trustlookup.io/v1/lookup`
- API key: with the plan, on https://trustlookup.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Its API docs: https://trustlookup.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing#lookup
- Sold by: TrustLookup (https://trustlookup.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 20%
- Owner's name: ✓
- ASN: ✓

## Price

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

## Charges

- Repeat free: never
- Also pays for: from the same budget: Phone validation · Carrier lookup · Number portability · HLR live status · Email validation · WHOIS and domain age

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Look up any IPv4 or IPv6 address: where it is, which network owns it (its ASN), and whether it belongs to a VPN, a Tor exit or a hosting provider.

## Data

- Freshness: 24 hours
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0
- You get: 250 credits a month
- Enough for: 250 calls a month
- Expires: month

## Rate limit

- Per second: 5
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: q. Optional: checks, fresh
- Method: GET
- Path: /v1/lookup

## About the plan

- Plan: Free
- Who can get it: anyone

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

IP address, network owner, ASN

## TrustLookup's plans (4)

- [TrustLookup, free](https://datacircle.dev/ip-company-lookup-apis/trustlookup/free/llms.txt): $0.00 per 1,000, 20% complete, 24 hours
- [TrustLookup, $19 monthly](https://datacircle.dev/ip-company-lookup-apis/trustlookup/19-monthly/llms.txt): $2.533 per 1,000, 20% complete, 24 hours
- [TrustLookup, $79 monthly](https://datacircle.dev/ip-company-lookup-apis/trustlookup/79-monthly/llms.txt): $2.257 per 1,000, 20% complete, 24 hours
- [TrustLookup, $249 monthly](https://datacircle.dev/ip-company-lookup-apis/trustlookup/249-monthly/llms.txt): $1.992 per 1,000, 20% complete, 24 hours

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

- `GET /v1/lookup`: [TrustLookup, free](https://datacircle.dev/ip-company-lookup-apis/trustlookup/free/llms.txt)

## TrustLookup's APIs (6)

- [TrustLookup: company enrichment API pricing, 4 plans](https://datacircle.dev/company-enrichment-apis/trustlookup/free/llms.txt)
- [TrustLookup: domain WHOIS API pricing, 4 plans](https://datacircle.dev/domain-whois-apis/trustlookup/free/llms.txt)
- [TrustLookup: email verification API pricing, 4 plans](https://datacircle.dev/validate-email-apis/trustlookup/free/llms.txt)
- [TrustLookup: IP company lookup API pricing, 4 plans](https://datacircle.dev/ip-company-lookup-apis/trustlookup/free/llms.txt)
- [TrustLookup: people enrichment API pricing, 4 plans](https://datacircle.dev/person-enrichment-apis/trustlookup/free/llms.txt)
- [TrustLookup: phone validation API pricing, 4 plans](https://datacircle.dev/validate-phone-apis/trustlookup/free/llms.txt)

## TrustLookup: IP company lookup API alternatives

- [WhoisFreaks, $2,000 pack, 1,000,000 API Credits, GET /v1.0/ip-whois](https://datacircle.dev/ip-company-lookup-apis/whoisfreaks/2000-pack-1000000-api-credits-get-v1-0-ip-whois/llms.txt): $2.00 per 1,000, 20% complete, live
- [Agent Data Tools, pay as you go, x402 pay per call, GET /ip/lookup](https://datacircle.dev/ip-company-lookup-apis/agent-data-tools/pay-as-you-go-x402-pay-per-call-get-ip-lookup/llms.txt): $2.00 per 1,000, 20% complete, live
- [Lordevo, pay as you go](https://datacircle.dev/ip-company-lookup-apis/lordevo/pay-as-you-go/llms.txt): $2.00 per 1,000, 20% complete, 24 hours
- [ipify, $23 pack, One-time purchase: 10,000 Credits, GET /api/v2/country](https://datacircle.dev/ip-company-lookup-apis/ipify/23-pack-one-time-purchase-10000-credits-get-api-v2-country/llms.txt): $2.30 per 1,000, 60% 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 2026-11-10.

- https://trustlookup.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://trustlookup.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://trustlookup.io/ip-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://trustlookup.io/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://trustlookup.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing