# data.go.kr, free, Operating account (운영계정), GET /getAffiliate_V2: Company hierarchy API

> 기준일자, 법인등록번호, 계열회사명을 통하여 계열회사법인등록번호, 상장여부를 조회하는 계열회사조회 기능

data.go.kr's company hierarchy API on its Operating account (운영계정) plan. It costs $0.00 per 1,000 companies. It returns 1 of the 3 key fields we check: Family tree.
data.go.kr limits how many calls you get but gives no number.
We haven't run data.go.kr through [our company hierarchy API benchmark](https://datacircle.dev/best-company-hierarchy-api.txt) yet.
Half of the 50 plans we rank by price cost $25.375 per 1,000 companies or less. This plan and 10 others tie for the lowest price per 1,000 companies of the 50 plans.
[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/data-go-kr/free-operating-account-get-getaffiliate-v2
- [Company hierarchy API: 5 providers compared](https://datacircle.dev/best-company-hierarchy-api.txt)
- Get it: https://www.data.go.kr/data/15043184/openapi.do?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- Request: `GET https://apis.data.go.kr/1160100/service/GetCorpBasicInfoService_V2/getAffiliate_V2`
- API key: with the plan, on https://www.data.go.kr/data/15043184/openapi.do?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- Its API docs: https://www.data.go.kr/data/15043184/openapi.do?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing#/API%20%EB%AA%A9%EB%A1%9D/getAffiliate_V2
- Sold by: data.go.kr (https://www.data.go.kr?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 33%
- Family tree: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: 기준일자, 법인등록번호, 계열회사명을 통하여 계열회사법인등록번호, 상장여부를 조회하는 계열회사조회 기능

## Data

- Countries: South Korea
- Full family tree: no
- Keep data: no limit
- Use data: any

## Plan

- Pay: $0

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: pageNo, numOfRows, resultType. Optional: basDt, crno, afilCmpyNm
- Method: GET
- Path: /getAffiliate_V2

## About the plan

- Plan: Operating account (운영계정)
- Who can get it: anyone with a data.go.kr account (application auto-approved)

## The 6 fields the plan's answer can hold

entity ID, reference date, total results, affiliate name, affiliate entity ID, affiliate listing status

## data.go.kr's plans (2)

- [data.go.kr, free, Operating account (운영계정), GET /getAffiliate_V2](https://datacircle.dev/company-hierarchy-apis/data-go-kr/free-operating-account-get-getaffiliate-v2/llms.txt): $0.00 per 1,000, 33% complete
- [data.go.kr, free, Development account (개발계정), GET /getAffiliate_V2](https://datacircle.dev/company-hierarchy-apis/data-go-kr/free-development-account-get-getaffiliate-v2/llms.txt): $0.00 per 1,000, 33% complete

## data.go.kr's calls for this API (2)

- `GET /getAffiliate_V2`: [data.go.kr, free, Operating account (운영계정), GET /getAffiliate_V2](https://datacircle.dev/company-hierarchy-apis/data-go-kr/free-operating-account-get-getaffiliate-v2/llms.txt)
- `GET /getConsSubsComp_V2`: [data.go.kr, free, Operating account (운영계정), GET /getConsSubsComp_V2](https://datacircle.dev/company-hierarchy-apis/data-go-kr/free-operating-account-get-getconssubscomp-v2/llms.txt)

## data.go.kr's APIs (3)

- [data.go.kr: business verification API pricing, 2 plans](https://datacircle.dev/business-verification-apis/data-go-kr/free-operating-account/llms.txt)
- [data.go.kr: company enrichment API pricing, 2 plans](https://datacircle.dev/company-enrichment-apis/data-go-kr/free-operating-account/llms.txt)
- [data.go.kr: company hierarchy API pricing, 2 plans, GET /getAffiliate_V2](https://datacircle.dev/company-hierarchy-apis/data-go-kr/free-operating-account-get-getaffiliate-v2/llms.txt)

## data.go.kr: company hierarchy API alternatives

- [Bigdata.com, free](https://datacircle.dev/company-hierarchy-apis/bigdata-com/free/llms.txt): $0.00 per 1,000, 100% complete, stored
- [Magellan Data, free, 10,000 free credits, POST /v1/corporate_families](https://datacircle.dev/company-hierarchy-apis/magellan-data/free-10000-free-credits-post-v1-corporate-families/llms.txt): $0.00 per 1,000, 67% complete
- [SEC API, free](https://datacircle.dev/company-hierarchy-apis/sec-api/free/llms.txt): $0.00 per 1,000, 67% complete, 1 minute
- [USAspending, free](https://datacircle.dev/company-hierarchy-apis/usaspending/free/llms.txt): $0.00 per 1,000, 33% complete
- [DanskCVRAPI, free](https://datacircle.dev/company-hierarchy-apis/danskcvrapi/free/llms.txt): $0.00 per 1,000, 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 2026-11-02.

- https://www.data.go.kr/catalog/15043184/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- https://www.data.go.kr/data/15043184/openapi.do?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing
- https://www.data.go.kr/ugs/selectPortalPolicyView.do?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-hierarchy-api-pricing