> ## Documentation Index
> Fetch the complete documentation index at: https://docs.superlink.me/llms.txt
> Use this file to discover all available pages before exploring further.

# ENS Subdomain Resolution Guide

Welcome to the Subdomain Resolution Guide for Superlink’s free subdomain service. This guide outlines the necessary steps and prerequisites for resolving Superlink subdomains.

## Prerequisites

Before proceeding, ensure that the Superlink SDK is correctly installed and configured within your environment. For detailed instructions, please refer to our [SDK Setup Guide](/sdk-reference/client-sdk/setup).

## Subdomain Resolution

Subdomain resolution comes in two forms: forward and reverse. Our API and SDK support both types of resolution, facilitating a comprehensive domain management experience.

### Forward Resolution

Forward resolution involves providing a domain name to retrieve associated information, such as Ethereum addresses, text records, or content hashes. Use the [Subdomain Resolve API](/sdk-reference/client-sdk/examples/free-subdomains/subdomain-resolve) for this purpose. By supplying the domain name, you can access all related information in a single request.

### Reverse Resolution

Reverse resolution allows you to input an Ethereum address and find out which domain points to it. This process is facilitated by the [Subdomain Reverse Resolve API](/sdk-reference/client-sdk/examples/free-subdomains/subdomain-reverse-resolve). By entering the Ethereum address associated with a domain, our service can return the corresponding domain name.