[Home](./index.md) > [bitburner](./bitburner.md) > [NS](./bitburner.ns.md) > [scan](./bitburner.ns.scan.md)
## NS.scan() method
Get the list of servers connected to a server.
Signature:
```typescript
scan(host?: string): string[];
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| host | string | Optional. Hostname of the server to scan, default to current server. |
Returns:
string\[\]
Returns an array of hostnames.
## Remarks
RAM cost: 0.2 GB
Returns an array containing the hostnames of all servers that are one node way from the specified target server. The hostnames in the returned array are strings.
## Example 1
```ts
// NS1
// All servers that are one hop from the current server.
tprint("Neighbors of current server.");
var neighbor = scan();
for (var i = 0; i < neighbor.length; i++) {
tprint(neighbor[i]);
}
// All neighbors of n00dles.
var target = "n00dles";
neighbor = scan(target);
tprintf("Neighbors of %s.", target);
for (var i = 0; i < neighbor.length; i++) {
tprint(neighbor[i]);
}
```
## Example 2
```ts
// NS2
// All servers that are one hop from the current server.
ns.tprint("Neighbors of current server.");
let neighbor = ns.scan();
for (let i = 0; i < neighbor.length; i++) {
ns.tprint(neighbor[i]);
}
// All neighbors of n00dles.
const target = "n00dles";
neighbor = ns.scan(target);
ns.tprintf("Neighbors of %s.", target);
for (let i = 0; i < neighbor.length; i++) {
ns.tprint(neighbor[i]);
}
```