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Use an ISIN lookup when your data identifies securities by International Securities Identification Number, such as in a fund holdings list.

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How an ISIN resolves

The CDN maps the ISIN to the domain of the company that issued the security, then returns that company’s logo. An ISIN has 12 characters: a two-letter country code, a nine-character national identifier, and a check digit. Case does not matter. To get the brand’s name and domain for an ISIN, or to store the logo file, call Brand on your server: GET /v2/brands?isin=US0378331005. For the other parameters and the fallback behavior, see the Logo.dev CDN overview.