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

# ISP and ZIP targeting

> Narrow your proxy beyond country, region and city - by carrier or by postal code. Residential and Mobile.

**Location targeting** narrows your proxy beyond country, region and city. You get two modes and you pick one.

Find it under **Advanced settings**, on the **Location targeting** toggle.

**"ISP" here means the carrier that owns the IP address** - Spectrum, Verizon, and so on. It has nothing to do with our ISP proxy product. Different thing, same three letters.

This applies to Residential and Mobile proxies.

## The two modes

| **Mode** | **What you pick** | **In your username** |
| - | - | - |
| **ISP** | A carrier | `-isp-spectrum` |
| **ZIP** | A US postal code | `-zip-93304` |

Switching the toggle changes the dropdown below it. **You can use one or the other, not both.**

Both dropdowns show an availability badge, the same **High** and **Medium** labels used for countries and regions.

![Location targeting toggle set to ISP with the carrier dropdown open](https://downloads.intercomcdn.com/i/o/yvkc0rpk/2620507621/32a62f9895c9b044d745116246b1/image.png)

![Location targeting toggle set to ZIP with the ZIP code field](https://downloads.intercomcdn.com/i/o/yvkc0rpk/2620509348/8033c692a0740bd5d2fa5fc3a332/image.png)

## ISP mode

Choose a country first, then a carrier. The dropdown lists the carriers we have inventory for in that country.

**ISP works alongside region and city.** Narrow as far as you like, then pick a carrier on top:

```text theme={null}
USERNAME-country-us-region-california-city-bakersfield-isp-spectrum-sid-abc123def4567-filter-medium
```

Useful when a service treats traffic differently depending on which network it comes from.

## ZIP mode

**ZIP targeting is United States only.**

Choose United States, then enter a ZIP code.

```text theme={null}
USERNAME-country-us-zip-93304-sid-abc123def4567-filter-medium
```

**ZIP replaces region and city.** Even if a region and city are still showing in the Configuration row above, your username will carry only the country and the ZIP. A ZIP already says exactly where you are.

## Both narrow your pool

A country gives you a large pool. A country plus a carrier, or a country plus a single postal code, can leave fewer addresses


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