@polkadot/networks

What is @polkadot/networks?

@polkadot/networks is a utility package that provides information about various networks in the Polkadot ecosystem. It includes details such as network names, prefixes, and other relevant metadata.

What are @polkadot/networks's main functionalities?

Get Network Information

This feature allows you to retrieve information about a specific network in the Polkadot ecosystem. In this example, we fetch details about the Polkadot network.

const { knownSubstrate } = require('@polkadot/networks');

const networkInfo = knownSubstrate.find(network => network.network === 'polkadot');
console.log(networkInfo);

List All Networks

This feature allows you to list all available networks in the Polkadot ecosystem. The code sample demonstrates how to extract and print the names of all networks.

const { knownSubstrate } = require('@polkadot/networks');

const allNetworks = knownSubstrate.map(network => network.network);
console.log(allNetworks);

Get Network Prefix

This feature allows you to retrieve the prefix of a specific network. In this example, we fetch the prefix for the Kusama network.

const { knownSubstrate } = require('@polkadot/networks');

const networkPrefix = knownSubstrate.find(network => network.network === 'kusama').prefix;
console.log(networkPrefix);

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README

@polkadot/networks

A list of all available Substrate networks and their applicable prefixes.

This list is periodically checked against the master list available at https://github.com/paritytech/ss58-registry/blob/main/ss58-registry.json

Changelog

13.5.6 Aug 26, 2025

Changes:

• Set pbkdf2Encode rounds to default to 210,000 (#1983)
• Bump @polkadot/wasm deps (#2002)

Contributed:

• Add DENTNet to generic Polkadot app supported chains (#1942)