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

# Public IPs

> Assign public static IPs to Telnyx IoT SIM cards to enable inbound connectivity from the internet, making cellular devices reachable like cloud servers.

By default, SIMs get dynamic private IPs — reachable outbound only. A public static IP makes the SIM reachable from the internet (\$3/mo per SIM).

## Actions

| Action                                                                                   | Endpoint                                        |
| :--------------------------------------------------------------------------------------- | :---------------------------------------------- |
| [Get Public IP](/api-reference/sim-cards/get-sim-card-public-ip-definition)              | `GET /sim_cards/{id}/public_ip`                 |
| [Set Public IP](/api-reference/sim-cards/request-setting-a-sim-card-public-ip)           | `POST /sim_cards/{id}/actions/set_public_ip`    |
| [Remove Public IP](/api-reference/sim-cards/request-removing-a-sim-card-public-ip)       | `POST /sim_cards/{id}/actions/remove_public_ip` |
| [Bulk Set Public IPs](/api-reference/sim-cards/request-bulk-setting-sim-card-public-ips) | `POST /sim_cards/actions/bulk_set_public_ips`   |

## When to Use

* **Inbound access** — connect *to* your SIM from anywhere (SSH, remote management, server-initiated requests)
* **Firewall allowlists** — stable IP for access control rules
* **Device-as-server** — run services on the device that external systems call into