# Presale Whitelist ### This feature is completely free right now. That might change in the future ## How Many Addresses **Can I add**? * At once? * Depends on the Network speed, we did tests with 500 Addresses at once and it worked, but we had days when the speed of the network, for example was very slow and we had to split up our lists in parts of 50 Addresses at once. * Overall? * Basically the maximum size of an array is 2^(64) -1, which is kindly enough. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.dexpad.io/faqs/create-your-presale-lock/presale-whitelist.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.