> For the complete documentation index, see [llms.txt](https://ednsdomains.gitbook.io/edns-sdk-doc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ednsdomains.gitbook.io/edns-sdk-doc/readme/register-domain.md).

# Reverse Domain

This function looks up the default EDNS domain by inputting its relevant wallet address.

### Available Function

[SetReverseDomain](/edns-sdk-doc/readme/register-domain/setreversedomain.md)

[LookupDomainFromAddress](/edns-sdk-doc/readme/register-domain/lookupdomainfromaddress.md)

### Example

To set a reverse domain "ednsdomains2022.meta" for address.

```
import {GetEdnsProvider, SetReverseDomain} from "@edns/sdk";
const privateKey = 'xxx...'
const provider = await GetEdnsProvider()
let walletWithProvider = new ethers.Wallet(privateKey, provider);
try {
    let result = await SetReverseDomain("ednsdomains2022.meta",walletWithProvider)
    console.log(result)
}catch (e){
    console.log(e)
}
```

To look up the EDNSdomain of "0xCD58F85e6Ec23733143599Fe0f982fC1d3f6C12c".

```
import {LookupDomainFromAddress} from "@edns/sdk";
let address = "0xCD58F85e6Ec23733143599Fe0f982fC1d3f6C12c"
console.log(await LookupDomainFromAddress(address));

//return ednsdomains2022.meta
```