The 6 Best B2B Data Providers in South Korea: Where NICE and Kodata Rule (2026)

South Korea splits its company data cleanly. For listed companies, the disclosure system DART, run by the financial regulator, is free and comprehensive, with financial statements, audit reports and filings available to anyone, including through an open API. For the private companies that make up the rest of the economy, the picture is very different: the data is dominated by two long-established credit bureaus.

Those two, NICE and Kodata, are the market for Korean private-company credit and firmographic data, with a bank-and-consumer bureau alongside and the local Dun & Bradstreet affiliate for international linkage. A strict privacy regime, tightened again for 2026, keeps the licensed bureaus firmly in control of contact and credit data. This guide sorts out the free listed-company layer and the paid private one.

It ranks {count} providers on merit. We sell Korean business data ourselves, so our pitch sits in a marked box rather than at number one.

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1. NICE: the market leader

The dominant Korean bureau for private-company credit and corporate evaluation.

NICE Information Service, part of the NICE group, is the market leader for Korean corporate credit and firmographic data, covering personal credit scoring, corporate information and evaluation, and technology-credit assessment, delivered through products like NICE Bizline. For a credit report or corporate evaluation on a Korean private company, it is the default source, and its scale and data pool put it ahead of the rest.

Seoul, South Korea · Quote only · Built on: Corporate register, Financial data, Own research

3. Kodata: the number two

The bank-backed second bureau, formerly Korea Enterprise Data, with the CRETOP portal.

Founded in 2005 and renamed from Korea Enterprise Data to Kodata in 2022, this is the bank-and-guarantee-fund-backed number two to NICE. Its CRETOP portal and early-warning products deliver corporate credit investigation and rating, and it was the first private-sector technology credit bureau in Korea. For a second read on a Korean company alongside NICE, it is the natural pairing, with a distinctive ownership base behind it.

Seoul, South Korea · Quote only · Built on: Corporate register, Financial data, Own research

4. NICE D&B: the D&B route

The Korean D&B affiliate, for D-U-N-S linkage and cross-border trade credit.

NICE D&B, a listed joint venture formed in 2002 between the NICE group and Dun & Bradstreet, provides enterprise credit assessment, technology evaluation and, as the Korean D&B affiliate, international and export business-credit reports with D-U-N-S linkage. For tying a Korean company into a global risk picture or assessing overseas counterparties from Korea, it is the route into the worldwide D&B file.

Seoul, South Korea · Quote only · Built on: Corporate register, D&B network, Own research

5. KCB: the consumer bureau

The bank-owned personal-credit bureau, with small-business scoring alongside.

Korea Credit Bureau, founded in 2005 and owned by a consortium of financial institutions, is primarily a consumer credit bureau, with the largest personal-credit data pool in Korea, plus small-business credit scoring and business reporting. For company-level B2B data it is weaker than NICE or Kodata, but for small-business and owner credit, where the person and the business overlap, its consumer depth is genuinely useful.

Seoul, South Korea · Quote only · Built on: Financial institution data, Public agencies

6. DART: the free disclosure system

The free, official disclosure system for listed companies, and the market's free baseline.

DART, run by the Financial Supervisory Service, is the free electronic disclosure system for listed and disclosure-obligated Korean companies, with financial statements, audit reports and major-event filings, plus a free developer API. It is the free baseline the paid bureaus sit above: comprehensive for listed companies, but silent on the private majority. For listed-company financials, it is all you need, and it costs nothing.

Seoul, South Korea · Free · Built on: Listed-company filings

How Korea's data market took shape

Korea built a free listed-company disclosure system and let two bureaus own the private data:

The Korean data landscape

The market is Korean-owned, structured around the NICE group and bank-backed bureaus:

Free for the listed, paid for the rest

Korea's official data splits by company type. Every business has a ten-digit registration number from the tax service, whose status you can check free, and incorporated firms have a separate court corporate register whose extracts cost a small fee. For listed companies, the regulator's DART system publishes financial statements and filings free, with an open API, so listed-company data is genuinely accessible.

For the private majority, though, the data is concentrated in two bureaus, NICE and Kodata, and a strict privacy regime keeps them in control. Korea's personal-information and credit-information laws, tightened again for 2026, constrain scraping and reselling personal and contact data, which is a key reason licensed bureaus dominate. Check the free listed-company source here:

• DART : The free electronic disclosure system for listed companies, with financials, filings and an open API.
• Hometax : The tax service portal, where a business registration number's active status can be checked free.
• IROS corporate register : The court registry for corporate register extracts, available for a small per-document fee.

Four questions before you sign anything

1. Listed, or private? For a listed Korean company, DART gives you the financials free. For a private company, which is most of the economy, you need a bureau, because the free disclosure system does not cover them.

2. Do you want a genuine second opinion? NICE dominates, so pairing it with Kodata gives you an independent read on the same company rather than one source twice.

3. Domestic, or cross-border? For a Korean company in a global risk picture, or overseas counterparties assessed from Korea, NICE D&B and the D-U-N-S linkage fit. For purely domestic credit, NICE or Kodata is enough.

4. Have you planned for the privacy rules? Korea's personal-information and credit-information laws are strict and were tightened for 2026. Assume you cannot freely scrape or resell personal and contact data, and rely on licensed bureaus for it.

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