# Proff, contact us, Proff Premium API, GET /api/companies/register/corporateStructures/{country}: Company hierarchy API

> Searches for corporate structures containing a company with a matching name, and returns lightweight references to the (possibly several) matching corporate structures

Proff's company hierarchy API on its Proff Premium API plan. It returns 1 of the 3 key fields we check: Company.
We haven't run Proff through [our company hierarchy API benchmark](https://datacircle.dev/best-company-hierarchy-api.txt) yet.
Proff gives this plan's price on request. We rank 54 plans for company hierarchy APIs by price. Half the plans cost $28.00 per 1,000 companies or less.
[DanskCVRAPI's DKK 599 monthly plan](https://datacircle.dev/company-hierarchy-apis/danskcvrapi/dkk-599-monthly/llms.txt) is the cheapest paid plan per 1,000 companies: $0.045. DanskCVRAPI's plan covers companies in Denmark only.
[GlobalEntity API's €59 monthly plan](https://datacircle.dev/company-hierarchy-apis/globalentity-api/59-monthly/llms.txt) covers any number of companies in 54 countries only. GlobalEntity API's €59 monthly plan costs less up front than DanskCVRAPI's DKK 599 monthly plan.
[DiscoLike](https://datacircle.dev/company-hierarchy-apis/discolike/99-monthly/llms.txt), [Bigdata.com](https://datacircle.dev/company-hierarchy-apis/bigdata-com/50-monthly/llms.txt) and [Magellan Data](https://datacircle.dev/company-hierarchy-apis/magellan-data/375-pack-25000-credits-post-v1-corporate-families/llms.txt) are the best company hierarchy API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/company-hierarchy-apis/proff/contact-us-proff-premium-api-get-api-companies-register-corporatestructures-country
- [Company hierarchy API: 5 providers compared](https://datacircle.dev/best-company-hierarchy-api.txt)
- Get it: https://www.proff.no/info/proff-api/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- Request: `GET https://api.proff.no/api/companies/register/corporateStructures/{country}`
- API key: with the plan, on https://www.proff.no/info/proff-api/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- Its API docs: https://api.proff.no/swagger/index.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- Sold by: Proff (https://www.proff.no?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 33%
- Company: ✓

## Price

- Billing: contact

## Aggregators

- Aggregators: none

## In their words

- Their pitch: Searches for corporate structures containing a company with a matching name, and returns lightweight references to the (possibly several) matching corporate structures

## Data

- Countries: Norway, Sweden, Denmark, Finland
- Full family tree: no
- Keep data: no API terms
- Use data: no API terms

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: country, query. Optional: pageSize, pageNumber
- Method: GET
- Path: /api/companies/register/corporateStructures/{country}

## About the plan

- Plan: Proff Premium API
- Who can get it: anyone with a token from Proff sales

## The 4 fields the plan's answer can hold

total results, organisation number, company name, root company name

## Proff's plans (1)

- [Proff, contact us, Proff Premium API, GET /api/companies/register/corporateStructures/{country}](https://datacircle.dev/company-hierarchy-apis/proff/contact-us-proff-premium-api-get-api-companies-register-corporatestructures-country/llms.txt): 33% complete

## Proff's calls for this API (2)

- `GET /api/companies/register/{country}/{id}/corporateStructure`: [Proff, contact us, Proff Premium API, GET /api/companies/register/{country}/{id}/corporateStructure](https://datacircle.dev/company-hierarchy-apis/proff/contact-us-proff-premium-api-get-api-companies-register-country-id-corporatestructure/llms.txt)
- `GET /api/companies/register/corporateStructures/{country}`: [Proff, contact us, Proff Premium API, GET /api/companies/register/corporateStructures/{country}](https://datacircle.dev/company-hierarchy-apis/proff/contact-us-proff-premium-api-get-api-companies-register-corporatestructures-country/llms.txt)

## Proff's APIs (5)

- [Proff: business verification API pricing, 1 plan](https://datacircle.dev/business-verification-apis/proff/contact-us/llms.txt)
- [Proff: people search API pricing, 1 plan](https://datacircle.dev/people-search-apis/proff/contact-us/llms.txt)
- [Proff: company hierarchy API pricing, 1 plan, GET /api/companies/register/corporateStructures/{country}](https://datacircle.dev/company-hierarchy-apis/proff/contact-us-proff-premium-api-get-api-companies-register-corporatestructures-country/llms.txt)
- [Proff: company discovery API pricing, 1 plan, GET /api/companies/eniropro/{country}](https://datacircle.dev/company-discovery-apis/proff/contact-us-proff-premium-api-get-api-companies-eniropro-country/llms.txt)
- [Proff: company discovery API pricing, 1 plan, GET /api/companies/register/{country}](https://datacircle.dev/company-discovery-apis/proff/contact-us-proff-premium-api-get-api-companies-register-country/llms.txt)
- [Proff: company enrichment API pricing, 1 plan, GET /api/companies/eniropro/{country}/{id}](https://datacircle.dev/company-enrichment-apis/proff/contact-us-proff-premium-api-get-api-companies-eniropro-country-id/llms.txt)
- [Proff: company enrichment API pricing, 1 plan, GET /api/companies/register/{country}/{id}](https://datacircle.dev/company-enrichment-apis/proff/contact-us-proff-premium-api-get-api-companies-register-country-id/llms.txt)

## Proff: company hierarchy API alternatives

- [Skrapp, contact us, Custom plan, POST /api/v3/companies/bulk-enrich](https://datacircle.dev/company-hierarchy-apis/skrapp/contact-us-custom-plan-post-api-v3-companies-bulk-enrich/llms.txt): 33% complete, stored
- [Transparent Data, contact us](https://datacircle.dev/company-hierarchy-apis/transparent-data/contact-us/llms.txt): 33% complete
- [UC, contact us](https://datacircle.dev/company-hierarchy-apis/uc/contact-us/llms.txt): 33% complete, 1 day
- [FactSet, contact us, Personalized proposal, GET /factset-entity/v1/entity-structures](https://datacircle.dev/company-hierarchy-apis/factset/contact-us-personalized-proposal-get-factset-entity-v1-entity-structures/llms.txt): 33% 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://api.proff.no/swagger/1.0/swagger.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- https://api.proff.no/swagger/index.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- https://apidocs.proff.no?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- https://www.proff.no/info/avtalevilkar/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- https://www.proff.no/info/premium-api/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- https://www.proff.no/info/proff-api/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing