Generator · Polish data
Polish KRS number
Endpoint GET /v1/pl/krs
What it covers
Returns a realistic synthetic Polish KRS (National Court Register) number, drawn from the plausibly-issued register range. KRS numbers have no public checksum, so there is no validation digit and no `invalid` mode — every value is structurally a genuine KRS. Use `format` to choose between the canonical 10-digit zero-padded rendering and the bare integer.
Parameters
| Parameter | Type | Description |
|---|---|---|
| count | integer1–1000 | Number of records to return, 1–1000 (your plan may lower this). Omitted returns a single record; set it for a batch. |
| edge | boolean | Restrict output to the register boundary numbers. |
| extreme | boolean | Return a correct value wrapped in a hostile encoding (untrimmed whitespace, invisible/zero-width characters, BOM, or bidi/combining marks). Homoglyphs are excluded so the value stays machine-parseable; it still validates after normalisation. |
| format | "padded" | "plain" | KRS rendering: padded or plain. Default padded. |
| invalid | boolean | Return a deliberately invalid value that fails validation, for testing rejection paths. |
| seed | integer | Integer seed for reproducible output: the same seed always yields the same record. |
Response fields
| Field | Type | Description |
|---|---|---|
| value | string | The KRS in the requested format. |
| number | integer | The underlying sequential register integer. |
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See all generators for Poland →The same kind of identifier elsewhere
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