# On-Chain Reference NFDomains .algo names are controlled by the NFD Registry Contract which controls pricing, and the minting of new NFDs. Each NFD is a standalone contract instance, with its own Algorand account (Vault) it controls. The registry acts as a contract factory, creating the NFDs and acting as the registrar and registry of record. Creation and resolving of names and addresses to names is via the registry. The following pages provide details on the on-chain storage of NFDs and the manner in which they're located. --- # 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://api-docs.nf.domains/reference/on-chain-reference.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.