LEI Test Data

Valid, MOD-97-checked Legal Entity Identifiers (ISO 17442).

Format: LEI (ISO 17442) · Licence: CC0-1.0, engine-validated

What it is

Twenty-character LEIs with a correctly computed ISO 7064 MOD-97-10 check-digit pair. Synthetic entities; not registered organisations.

Downloads

Size	Rows	Formats
Small	100 rows	.json · .csv
Medium	2,000 rows	.json · .csv
Large	20,000 rows	.json · .csv

Cite this dataset

If you use this data in a post, paper, or tool, please cite it with the DOI:

StanzaAPI. (2026). LEI Test Data. CC0-1.0.
DOI: 10.5281/zenodo.23076181
https://stanzaapi.com/datasets/lei

https://doi.org/10.5281/zenodo.23076181

Columns

Key	Meaning
`lei`	LEI
`lou_prefix`	LOU prefix
`entity_id`	Entity part

Frequently Asked Questions

Is this LEI (ISO 17442) test data free to use?

Yes. The rows are released under CC0-1.0, so you can copy, modify, and redistribute them without attribution.

Is the data real?

No. All rows are synthetic. Every value is validated by the StanzaAPI engine for this format: it matches the standard structure and passes the format’s check-digit algorithm.

How is the dataset generated?

Deterministically from a fixed seed, so the same size always produces the same rows. That makes it safe to pin in a fixture or CI pipeline.