# The Data City, contact us, Beta API key, GET /v1/us/companies/{companyNumber}/group: Company hierarchy API

> Returns group or location rows for a company as host-defined JSON, or 404 when absent.

The Data City's company hierarchy API on its Beta API key plan. It returns 2 of the 3 key fields we check: Company, Parent.
The cheapest of the 20 plans we rank by price is [PredictLeads, pay as you go, 10,001-100,000 API Calls](https://datacircle.dev/company-hierarchy-apis/predictleads/pay-as-you-go-10001-100000-api-calls/llms.txt), at $10.00 per 1,000.

- This page: https://datacircle.dev/company-hierarchy-apis/the-data-city/contact-us-beta-api-key-get-v1-us-companies-companynumber-group
- Get it: https://thedatacity.com/pricing
- Its API docs: https://docs.thedatacity.com/global-api/us/companies/get-a-company-group
- Sold by: The Data City (https://thedatacity.com)
- Checked: 2026-10-25

## In the answer

- Completeness: 67%
- Company: ✓
- Parent: ✓

## Price

- Billing: contact

## Aggregators

- Aggregators: none

## In their words

- Their pitch: Returns group or location rows for a company as host-defined JSON, or 404 when absent.

## Data

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

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: companyNumber
- Method: GET
- Path: /v1/us/companies/{companyNumber}/group

## About the plan

- Plan: Beta API key
- Who can get it: an organisation that emails support@thedatacity.com its name, the email of the person who will hold the key and the markets it expects to use

## The 34 fields the plan's answer can hold

company number, company name, website, company description, country, address, town, state, phone, reg number, ZIP code, latitude, longitude, legal form, employee range, employees, turnover, finances by year, logo URL, parent company number, parent company name, activity code, activity code name, SIC code, SIC code name, NAICS code, finances by year year ending, finances by year accounts date, finances by year accounts type, finances by year turnover, finances by year EBIT, finances by year net income, finances by year employees here, finances by year employees total

## The Data City's plans (2)

- [The Data City, contact us, Beta API key, GET /v1/us/companies/{companyNumber}/group](https://datacircle.dev/company-hierarchy-apis/the-data-city/contact-us-beta-api-key-get-v1-us-companies-companynumber-group/llms.txt): 67% complete
- [The Data City, contact us, API access](https://datacircle.dev/company-hierarchy-apis/the-data-city/contact-us-api-access/llms.txt): 67% complete, 1 month

## The Data City's calls (4)

- `GET /v1/de/companies/{companyNumber}/group`: [The Data City, contact us, Beta API key, GET /v1/de/companies/{companyNumber}/group](https://datacircle.dev/company-hierarchy-apis/the-data-city/contact-us-beta-api-key-get-v1-de-companies-companynumber-group/llms.txt)
- `GET /v1/ie/companies/{companyNumber}/group`: [The Data City, contact us, Beta API key, GET /v1/ie/companies/{companyNumber}/group](https://datacircle.dev/company-hierarchy-apis/the-data-city/contact-us-beta-api-key-get-v1-ie-companies-companynumber-group/llms.txt)
- `GET /v1/us/companies/{companyNumber}/group`: [The Data City, contact us, Beta API key, GET /v1/us/companies/{companyNumber}/group](https://datacircle.dev/company-hierarchy-apis/the-data-city/contact-us-beta-api-key-get-v1-us-companies-companynumber-group/llms.txt)
- `GET /v2/companies/{companyNumber}/group-structure`: [The Data City, contact us, API access](https://datacircle.dev/company-hierarchy-apis/the-data-city/contact-us-api-access/llms.txt)

## The Data City's APIs (6)

- [The Data City: similar companies API pricing, 2 plans](https://datacircle.dev/similar-company-apis/the-data-city/free/llms.txt)
- [The Data City: company discovery API pricing, 1 plan, POST /v1/fr/companies](https://datacircle.dev/company-discovery-apis/the-data-city/contact-us-beta-api-key-post-v1-fr-companies/llms.txt)
- [The Data City: company discovery API pricing, 1 plan, POST /v1/de/companies](https://datacircle.dev/company-discovery-apis/the-data-city/contact-us-beta-api-key-post-v1-de-companies/llms.txt)
- [The Data City: company discovery API pricing, 1 plan, POST /v1/ie/companies](https://datacircle.dev/company-discovery-apis/the-data-city/contact-us-beta-api-key-post-v1-ie-companies/llms.txt)
- [The Data City: company discovery API pricing, 1 plan, POST /v1/us/companies](https://datacircle.dev/company-discovery-apis/the-data-city/contact-us-beta-api-key-post-v1-us-companies/llms.txt)
- [The Data City: company discovery API pricing, 1 plan, GET /v1/fr/search](https://datacircle.dev/company-discovery-apis/the-data-city/contact-us-beta-api-key-get-v1-fr-search/llms.txt)
- [The Data City: company discovery API pricing, 1 plan, GET /v1/de/search](https://datacircle.dev/company-discovery-apis/the-data-city/contact-us-beta-api-key-get-v1-de-search/llms.txt)
- [The Data City: company discovery API pricing, 1 plan, GET /v1/ie/search](https://datacircle.dev/company-discovery-apis/the-data-city/contact-us-beta-api-key-get-v1-ie-search/llms.txt)
- [The Data City: company discovery API pricing, 1 plan, GET /v1/us/search](https://datacircle.dev/company-discovery-apis/the-data-city/contact-us-beta-api-key-get-v1-us-search/llms.txt)
- [The Data City: company enrichment API pricing, 1 plan, GET /v1/fr/companies/{companyNumber}](https://datacircle.dev/company-enrichment-apis/the-data-city/contact-us-beta-api-key-get-v1-fr-companies-companynumber/llms.txt)
- [The Data City: company enrichment API pricing, 1 plan, GET /v1/de/companies/{companyNumber}](https://datacircle.dev/company-enrichment-apis/the-data-city/contact-us-beta-api-key-get-v1-de-companies-companynumber/llms.txt)
- [The Data City: company enrichment API pricing, 1 plan, GET /v1/ie/companies/{companyNumber}](https://datacircle.dev/company-enrichment-apis/the-data-city/contact-us-beta-api-key-get-v1-ie-companies-companynumber/llms.txt)
- [The Data City: company enrichment API pricing, 1 plan, GET /v1/us/companies/{companyNumber}](https://datacircle.dev/company-enrichment-apis/the-data-city/contact-us-beta-api-key-get-v1-us-companies-companynumber/llms.txt)
- [The Data City: company enrichment API pricing, 1 plan, POST /v1/fr/companies/batch](https://datacircle.dev/company-enrichment-apis/the-data-city/contact-us-beta-api-key-post-v1-fr-companies-batch/llms.txt)
- [The Data City: company enrichment API pricing, 1 plan, POST /v1/de/companies/batch](https://datacircle.dev/company-enrichment-apis/the-data-city/contact-us-beta-api-key-post-v1-de-companies-batch/llms.txt)
- [The Data City: company enrichment API pricing, 1 plan, POST /v1/ie/companies/batch](https://datacircle.dev/company-enrichment-apis/the-data-city/contact-us-beta-api-key-post-v1-ie-companies-batch/llms.txt)
- [The Data City: company enrichment API pricing, 1 plan, POST /v1/us/companies/batch](https://datacircle.dev/company-enrichment-apis/the-data-city/contact-us-beta-api-key-post-v1-us-companies-batch/llms.txt)
- [The Data City: company hierarchy API pricing, 2 plans, GET /v1/us/companies/{companyNumber}/group](https://datacircle.dev/company-hierarchy-apis/the-data-city/contact-us-beta-api-key-get-v1-us-companies-companynumber-group/llms.txt)
- [The Data City: cached company enrichment API pricing, 1 plan, GET /v2/companies/{companyNumber}](https://datacircle.dev/cached-company-enrichment-apis/the-data-city/contact-us-api-access-get-v2-companies-companynumber/llms.txt)
- [The Data City: cached company enrichment API pricing, 1 plan, POST /v2/companies/batch](https://datacircle.dev/cached-company-enrichment-apis/the-data-city/contact-us-api-access-post-v2-companies-batch/llms.txt)
- [The Data City: cached company enrichment API pricing, 1 plan, POST /v2/companies/by-website/batch](https://datacircle.dev/cached-company-enrichment-apis/the-data-city/contact-us-api-access-post-v2-companies-by-website-batch/llms.txt)
- [The Data City: cached company enrichment API pricing, 1 plan, GET /v2/companies/by-website](https://datacircle.dev/cached-company-enrichment-apis/the-data-city/contact-us-api-access-get-v2-companies-by-website/llms.txt)
- [The Data City: cached company enrichment API pricing, 1 plan, POST /v2/companies/by-website](https://datacircle.dev/cached-company-enrichment-apis/the-data-city/contact-us-api-access-post-v2-companies-by-website/llms.txt)
- [The Data City: cached company discovery API pricing, 1 plan](https://datacircle.dev/cached-company-discovery-apis/the-data-city/contact-us/llms.txt)

## The Data City: company hierarchy API alternatives

- [ZoomInfo, contact us](https://datacircle.dev/company-hierarchy-apis/zoominfo/contact-us/llms.txt): 100% complete, stored
- [Bigdata.com, contact us](https://datacircle.dev/company-hierarchy-apis/bigdata-com/contact-us/llms.txt): 100% complete
- [Apollo, contact us, Custom, POST /organizations/bulk_enrich](https://datacircle.dev/company-hierarchy-apis/apollo/contact-us-custom-post-organizations-bulk-enrich/llms.txt): 67% complete, 1 month
- [Demandbase, contact us](https://datacircle.dev/company-hierarchy-apis/demandbase/contact-us/llms.txt): 67% 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 2026-10-25.

- https://docs.thedatacity.com/global-api/guides/authentication.md
- https://docs.thedatacity.com/global-api/guides/rate-limits.md
- https://docs.thedatacity.com/global-api/index.md
- https://docs.thedatacity.com/global-api/us/companies/get-a-company-group.md
- https://docs.thedatacity.com/instant-classification/guides/rate-limits.md
- https://thedatacity.com/api-access
- https://thedatacity.com/pricing
- https://thedatacity.com/terms-and-conditions