GLEIF LEI opzoek API — juridische entiteiten opzoeken via Legal Entity Identifier code of bedrijfsnaam. Wereldwijde LEI-database via GLEIF REST API.

GET /v1/business/lei-lookup

Look up a legal entity by its LEI (Legal Entity Identifier) code, or search for entities by name, using the GLEIF Global LEI Index (CC-0 open data, ~2.5 million entities worldwide).

Provide either lei or name — not both.

Request parameters

Parameter	Type	Required	Description
`lei`	string	✗	Exact 20-character LEI code, e.g. `5493001KJTIIGC8Y1R12`
`name`	string	✗	Company name to search, e.g. `ING Bank`
`country`	string	✗	Filter name search by ISO alpha-2 jurisdiction, e.g. `NL`
`rows`	integer	✗	Maximum results for name search (1–20, default `5`)

Example request — by LEI code

curl -H "X-API-Key: YOUR_KEY" \
  "https://api.omnizoek.nl/v1/business/lei-lookup?lei=5493001KJTIIGC8Y1R12"

Example response — single LEI

{
  "lei": "5493001KJTIIGC8Y1R12",
  "legal_name": "ING Bank N.V.",
  "other_names": [],
  "legal_form": "NIJZ",
  "jurisdiction": "NL",
  "status": "ISSUED",
  "registered_address": {
    "lines": ["Bijlmerplein 888"],
    "city": "Amsterdam",
    "region": "NL-NH",
    "country": "NL",
    "postal_code": "1102 MG"
  },
  "headquarters_address": {
    "lines": ["Bijlmerplein 888"],
    "city": "Amsterdam",
    "region": "NL-NH",
    "country": "NL",
    "postal_code": "1102 MG"
  },
  "registration_date": "2012-06-06T00:00:00+02:00",
  "last_updated": "2024-01-05T00:00:00+01:00",
  "next_renewal": "2025-01-04T00:00:00+01:00",
  "bic_codes": ["INGBNL2A"],
  "parent_lei": null
}

Example request — by name

curl -H "X-API-Key: YOUR_KEY" \
  "https://api.omnizoek.nl/v1/business/lei-lookup?name=ING+Bank&country=NL&rows=3"

Example response — name search

{
  "query": "ING Bank",
  "country_filter": "NL",
  "results": [
    { "lei": "5493001KJTIIGC8Y1R12", "legal_name": "ING Bank N.V.", "status": "ISSUED", "jurisdiction": "NL", "..." : "..." }
  ]
}

Response fields (single LEI)

Field	Type	Description
`lei`	string	20-character LEI code
`legal_name`	string	Official registered legal name
`other_names`	array	Trade names or transliterated names
`legal_form`	string \| null	Legal form code, e.g. `NV`, `BV`
`jurisdiction`	string \| null	ISO alpha-2 jurisdiction, e.g. `NL`
`status`	string	`ISSUED` \| `LAPSED` \| `MERGED` \| `RETIRED` \| `ANNULLED` \| `DUPLICATE`
`registered_address`	object	Registered (legal) address
`headquarters_address`	object	Headquarters address
`registration_date`	string \| null	Initial registration date (ISO 8601)
`last_updated`	string \| null	Last update date (ISO 8601)
`next_renewal`	string \| null	Next annual renewal date (ISO 8601)
`bic_codes`	array	Associated SWIFT BIC codes, if any
`parent_lei`	string \| null	Direct parent entity LEI, if known

Error responses

Status	Cause
`400`	Neither `lei` nor `name` provided
`404`	LEI code not found, or no results for name search
`503`	GLEIF API unavailable

Caching

Results are cached for 24 hours — LEI records change infrequently (annual renewals).

LEI Opzoeken (GLEIF)