# TrustLookup, free: Company enrichment API

> Check a carrier’s DOT number before you book a load or sign a contract. See the legal name, whether FMCSA allows it to operate, how many trucks and drivers it runs, and its address.

TrustLookup's Free plan for the company enrichment API costs $0.00 per 1,000 companies. We check each provider's docs for 13 fields. TrustLookup's docs list 3: Description, Type and status, Headquarters.
You get 250 credits a month. You spend the credits on TrustLookup's other calls. This call is free. TrustLookup limits how many calls you get but gives no number.
We haven't run TrustLookup through [our company enrichment API benchmark](https://datacircle.dev/best-company-enrichment-api.txt) yet.
This plan is free. We rank 3,016 plans for company enrichment APIs by price. Half the plans cost $8.977 or less per 1,000 companies. [See the best free company enrichment API plan.](https://datacircle.dev/best-company-enrichment-api.txt)
[Coldlytics's $49 monthly plan](https://datacircle.dev/company-enrichment-apis/coldlytics/49-monthly/llms.txt) is the cheapest paid plan per 1,000 companies. Coldlytics's company enrichment API costs nothing beyond the plan price. [Pokt Agent's pay-as-you-go plan](https://datacircle.dev/company-enrichment-apis/pokt-agent/pay-as-you-go-x402-pay-per-call-post-kr-entity-resolve/llms.txt) costs the least for 10,000 companies a month: $1.00.
[APIs Peru's PEN 30 (about $9) monthly plan](https://datacircle.dev/company-enrichment-apis/apis-peru/pen-30-monthly/llms.txt) covers any number of companies in Peru only. APIs Peru's PEN 30 (about $9) monthly plan costs less up front than Coldlytics's $49 monthly plan.
[GLEIF](https://datacircle.dev/company-enrichment-apis/gleif/free/llms.txt), [TrustMRR](https://datacircle.dev/company-enrichment-apis/trustmrr/free/llms.txt) and [GetProspect](https://datacircle.dev/company-enrichment-apis/getprospect/49-monthly-starter-post-v2-companies-enrich/llms.txt) are the best company enrichment API providers in the Datacircle benchmark for companies in any country.

- This page: https://datacircle.dev/company-enrichment-apis/trustlookup/free
- [Company enrichment API in 2026: the best of 260+ compared](https://datacircle.dev/best-company-enrichment-api.txt)
- Get it: https://trustlookup.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-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=company-enrichment-api-pricing
- Its API docs: https://trustlookup.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing#lookup
- Sold by: TrustLookup (https://trustlookup.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 23%
- Description: ✓
- Type and status: ✓
- Headquarters: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Check a carrier’s DOT number before you book a load or sign a contract. See the legal name, whether FMCSA allows it to operate, how many trucks and drivers it runs, and its address.

## Data

- Freshness: 24 hours
- Countries: United States
- Keep data: no API terms
- Use data: no API terms

## Plan

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

## Rate limit

- Per second: 5
- Batch: 1

## Speed

- Answer: in the call

## The call

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

## About the plan

- Plan: Free
- Who can get it: anyone

## The 12 fields the plan's answer can hold

USDOT number, found, legal name, doing business as name, status, allowed to operate, power units, drivers, address, summary, cached, checked at

## TrustLookup's plans (4)

- [TrustLookup, free](https://datacircle.dev/company-enrichment-apis/trustlookup/free/llms.txt): $0.00 per 1,000, 23% complete, 24 hours
- [TrustLookup, $19 monthly](https://datacircle.dev/company-enrichment-apis/trustlookup/19-monthly/llms.txt): 23% complete, 24 hours
- [TrustLookup, $79 monthly](https://datacircle.dev/company-enrichment-apis/trustlookup/79-monthly/llms.txt): 23% complete, 24 hours
- [TrustLookup, $249 monthly](https://datacircle.dev/company-enrichment-apis/trustlookup/249-monthly/llms.txt): 23% complete, 24 hours

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

- `GET /v1/lookup`: [TrustLookup, free](https://datacircle.dev/company-enrichment-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: company enrichment API alternatives

- [data.ct.gov, free, With an app token](https://datacircle.dev/company-enrichment-apis/data-ct-gov/free-with-an-app-token/llms.txt): $0.00 per 1,000, 38% complete, 1 day
- [PRH, free](https://datacircle.dev/company-enrichment-apis/prh/free/llms.txt): $0.00 per 1,000, 23% complete, 1 day
- [Brreg, free](https://datacircle.dev/company-enrichment-apis/brreg/free/llms.txt): $0.00 per 1,000, 38% complete, live
- [Companies Registration Office, free](https://datacircle.dev/company-enrichment-apis/companies-registration-office/free/llms.txt): $0.00 per 1,000, 15% 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=company-enrichment-api-pricing
- https://trustlookup.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://trustlookup.io/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://trustlookup.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://trustlookup.io/usdot-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing