# PRH, free: Company discovery API

> Search for companies by company name, place of registered office, Business ID or company form

PRH's company discovery API on its Free plan. It costs $0.00 per 1,000 companies. It returns 2 of the 13 key fields we check: Headquarters, Locations.
PRH limits how many pages you get but gives no number.
Half of the 729 plans we rank by price cost $1.00 per 1,000 companies or less. This plan and 55 others tie for the lowest price per 1,000 companies of the 729 plans.
[PeopleSearch.im's $5 pack](https://datacircle.dev/company-discovery-apis/peoplesearch-im/5-pack/llms.txt) covers any number of companies. PeopleSearch.im's $5 pack costs less up front than StackScan's $189 monthly plan.
[GetProspect](https://datacircle.dev/company-discovery-apis/getprospect/49-monthly/llms.txt), [Hunter](https://datacircle.dev/company-discovery-apis/hunter/49-monthly-starter-post-discover/llms.txt) and [PeopleSearch.im](https://datacircle.dev/company-discovery-apis/peoplesearch-im/5-pack/llms.txt) are the best company discovery API providers in our benchmark.

- This page: https://datacircle.dev/company-discovery-apis/prh/free
- [Best company discovery API in 2026: providers compared](https://datacircle.dev/best-company-discovery-api.txt)
- Get it: https://avoindata.prh.fi/en/info/swagger-ui?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Request: `GET https://avoindata.prh.fi/opendata-ytj-api/v3/companies`
- API key: not needed
- Its API docs: https://avoindata.prh.fi/en/ytj/swagger-ui?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Sold by: PRH (https://avoindata.prh.fi/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 15%
- Headquarters: ✓
- Locations: ✓

## Price

- $ per 1,000 companies: $0.00
- Per: page of 100
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Search for companies by company name, place of registered office, Business ID or company form

## Data

- Freshness: 1 day
- Countries: Finland
- Keep data: no limit
- Use data: "The data are freely available as set out in the terms of the Creative Commons Attribution 4.0 International license. Mention the original source when you use the data. Services based on the data are not allowed to use the PRH or Finnish Business Information System logos, or in some other manner mix up the services with the PRH’s services by using a similar layout. [...] Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use."

## Plan

- Pay: $0

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: nothing required. Optional: location, companyForm, mainBusinessLine, registrationDateStart, registrationDateEnd, postCode, businessIdRegistrationStart, businessIdRegistrationEnd, page
- Method: GET
- Path: /companies

## About the plan

- Plan: Free
- Who can get it: anyone

## The 57 fields the plan's answer can hold

total results, business ID, business ID registration date, business ID source, EU ID, EU ID source, name, name type, name registration date, name end date, name version, name source, main business line code, main business line description, main business line code set, main business line registration date, main business line source, website URL, website registration date, website source, company form type, company form description, company form registration date, company form end date, company form version, company form source, company situation type, company situation registration date, company situation end date, company situation source, registered entry type, registered entry description, registered entry registration date, registered entry end date, registered entry register, registered entry authority, address type, street, post code, post office city, municipality code, language code, post office box, building number, entrance, apartment number, apartment ID suffix, care of, country, free address line, address registration date, address source, trade register status, status, registration date, end date, last modified

## PRH's plans (1)

- [PRH, free](https://datacircle.dev/company-discovery-apis/prh/free/llms.txt): $0.00 per 1,000, 15% complete, 1 day

## PRH's calls (1)

- `GET /companies`: [PRH, free](https://datacircle.dev/company-discovery-apis/prh/free/llms.txt)

## PRH's APIs (3)

- [PRH: business verification API pricing, 1 plan](https://datacircle.dev/business-verification-apis/prh/free/llms.txt)
- [PRH: company discovery API pricing, 1 plan](https://datacircle.dev/company-discovery-apis/prh/free/llms.txt)
- [PRH: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/prh/free/llms.txt)

## PRH: company discovery API alternatives

- [Findymail, free trial, POST /api/intellimatch/search, Search leads](https://datacircle.dev/company-discovery-apis/findymail/free/llms.txt): $0.00 per 1,000, 31% complete, live
- [SerpKite, free](https://datacircle.dev/company-discovery-apis/serpkite/free/llms.txt): $0.00 per 1,000, 23% complete, live
- [Sumble, free, POST /v9/organizations, Organizations](https://datacircle.dev/company-discovery-apis/sumble/free-post-v9-organizations-organizations/llms.txt): $0.00 per 1,000, 46% complete, 1 day
- [Captapi, free](https://datacircle.dev/company-discovery-apis/captapi/free/llms.txt): $0.00 per 1,000, 38% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-02.

- https://avoindata.prh.fi/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://avoindata.prh.fi/en/info/swagger-ui?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://avoindata.prh.fi/en/ytj/swagger-ui?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://avoindata.prh.fi/opendata-ytj-api/v3/companies?name=nokia&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://avoindata.prh.fi/opendata-ytj-api/v3/schema?lang=en&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://creativecommons.org/licenses/by/4.0/deed.en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing