# Mobile Proxies ISP Targeting

Source: https://docs.evomi.com/proxy-instructions/mobile-proxies/geo-targetting/isp/

You can target a specific mobile carrier using the `isp` parameter. This can be useful for tasks like testing content delivery, ad verification, and more. We keep a list of carriers that you can target which gets updated frequently. You must use specific shortcodes for each carrier.

On the mobile endpoint only mobile network operators are targetable — a fixed-line or cable ISP shortcode will not match any IP in the mobile pool. Combine `isp` with `country` to pin a carrier to the market you mean, since the same brand operates under separate networks in different countries.

Shortcodes are the carrier's identifier in our network, not its consumer brand name, so copy them exactly as they appear rather than guessing from the operator's marketing name. `vodafone`, `oonline`, `sunrisegmbh` and `tmobileusainc` are all valid examples:

```bash
curl -x http://mp.evomi.com:3000 -U testuser:testpassword_isp-vodafone https://ip.evomi.com/s

curl -x http://mp.evomi.com:3000 -U testuser:testpassword_isp-sunrisegmbh https://ip.evomi.com/s

curl -x http://mp.evomi.com:3000 -U testuser:testpassword_isp-oonline https://ip.evomi.com/s

curl -x http://mp.evomi.com:3000 -U testuser:testpassword_country-US_isp-tmobileusainc https://ip.evomi.com/s

```

  Note that you can find all available carriers in the dashboard via our [Proxy Generator](https://docs.evomi.com/proxy-instructions/proxy-generator/). The list is generated from the live pool, so it is the only authoritative source of shortcodes.