---
title: "mix-dns: Hostname Resolution Over the Nym Mixnet"
description: "TypeScript package that resolves hostnames through the Nym mixnet as UDP DNS via an IPR exit gateway."
schemaType: "TechArticle"
section: "Developers"
lastUpdated: "2026-06-05"
---

# mix-dns

[`@nymproject/mix-dns`](https://www.npmjs.com/package/@nymproject/mix-dns) resolves hostnames to IPs through the Nym mixnet. The query travels as a UDP datagram to a public resolver via the [IPR (Internet Packet Router)](/network/infrastructure/exit-services#ip-packet-router) exit gateway, not through the browser or OS resolver.

```text
┌──────────────────────────────────────────────────────────────┐
│  Your browser app                                            │
│    └─ mixDNS('example.com')                                  │
│         └─ mix-tunnel (smolmix-wasm, Web Worker)             │
│              └─ UDP datagram via the IPR                     │
│                   └─ public resolver (default 8.8.8.8:53)    │
└──────────────────────────────────────────────────────────────┘
```

The resolver sees a query from the IPR's IP, not yours, and the browser's own resolver path (the OS stub resolver, any local DoH) is bypassed entirely.

## When to use it

`mix-dns` is for cases where you need the resolved IP itself, not a connection that uses it. [`mix-fetch`](/developers/mix-fetch) and [`mix-websocket`](/developers/mix-websocket) already resolve via the mixnet internally; you don't need to call `mixDNS` before either.

Direct uses:

- Validate that a hostname resolves to an expected IP range before connecting through any path.
- Build IP-based allow / deny lists for an app that performs the connection itself.
- Probe whether a hostname is reachable from the IPR exit's perspective without opening a connection.

## In this section

- [Get started](/developers/mix-dns/get-started): install and resolve your first hostname.
- [Reference & security](/developers/mix-dns/guides): configure the resolver, and what it sees.
- [TypeDoc reference](/developers/mix-dns/api/globals): generated from the source.
- [Browser example](https://github.com/nymtech/nym/tree/develop/sdk/typescript/examples/mix-dns/browser): a runnable example app.