Resolver

An independent resolver for DNS requests.

Creating a new resolver uses the default server settings. Setting the servers used for a resolver using resolver.setServers() does not affect other resolvers:

const { Resolver } = require('node:dns').promises;
const resolver = new Resolver();
resolver.setServers(['4.4.4.4']);

// This request will use the server at 4.4.4.4, independent of global settings.
resolver.resolve4('example.org').then((addresses) => {
  // ...
});

// Alternatively, the same code can be written using async-await style.
(async function() {
  const addresses = await resolver.resolve4('example.org');
})();

The following methods from the dnsPromises API are available:

• resolver.getServers()

• resolver.resolve()

• resolver.resolve4()

• resolver.resolve6()

• resolver.resolveAny()

• resolver.resolveCaa()

• resolver.resolveCname()

• resolver.resolveMx()

• resolver.resolveNaptr()

• resolver.resolveNs()

• resolver.resolvePtr()

• resolver.resolveSoa()

• resolver.resolveSrv()

• resolver.resolveTxt()

• resolver.reverse()

• resolver.setServers()