---
title: "Reserve IP FAQ"
description: "Short answers about reserved IPs in TIR, public and VPC, each linking to the full page."
content_type: "faq"
product: "tir-reserved-ip"
platform: "TIR"
url: "/tir/tir-reserved-ip/faq/"
---

# Reserve IP FAQ

## How many reserved IPs can I have?

Your account can hold five reserved IPs in each region by default, counted across all its
projects. When you reach the limit, the reserve dialog offers **Request**, and E2E reviews your
request. See [Reserve an IP](/tir/tir-reserved-ip/how-to/reserve-an-ip-address/).

## Am I charged for a reserved IP that nothing uses?

Yes. A reserved IP is charged monthly from the moment you reserve it until you delete it. See
[Reserved IP billing](/tir/tir-reserved-ip/concepts/reserved-ip-billing/).

## Can I move a reserved IP to another project?

Yes, to another project in your account, if you are an Owner or Admin and the IP is **Available**.
See [Transfer a reserved IP](/tir/tir-reserved-ip/how-to/transfer-a-reserved-ip/).

## Which resources can a reserved IP attach to?

A public IP attaches to an instance, a VM, a Slurm cluster, or a Kubernetes cluster in the same project and
region. A VPC IP attaches to an instance or an inference service. See
[Attach a reserved IP](/tir/tir-reserved-ip/how-to/attach-a-reserved-ip/).

## Does detaching a reserved IP stop its charge?

No. A public reserved IP is charged until you delete it, whatever its state, and a transfer to another project
keeps the charge running too. Deleting an instance leaves its reserved IPs in place, still charged. See
[Reserved IP billing](/tir/tir-reserved-ip/concepts/reserved-ip-billing/).

## Is a VPC IP charged?

No. Reserving, attaching, detaching, and deleting a VPC IP are free in TIR. The MyAccount VPC it comes from
is billed on its own plan.

## Does my instance keep its address when it stops?

With a reserved IP, yes: the address stays yours through every stop and start. The default public IP of an
instance stays through a restart, but a stop gives it back, so the next start can bring a different
address. See [Reserved IPs](/tir/tir-reserved-ip/concepts/reserved-ips/).

## Why did reserving a VPC IP use two addresses from my VPC?

A VPC IP takes the IP itself and an **Egress IP** from the VPC. The list shows both.

## Can I transfer a VPC IP to another project?

No. Only a public reserved IP transfers. For a VPC IP, delete it and reserve a new one in the other
project.

## Can I attach more than one reserved IP to an instance?

Yes. One instance can hold several reserved IPs. See
[Attach a reserved IP](/tir/tir-reserved-ip/how-to/attach-a-reserved-ip/).

## I created a VPC but cannot reserve an IP in it. Why?

A VPC IP comes from a VPC in your E2E MyAccount project. A VPC you create under **Networking** >
**VPC** is for a virtual machine on a CPU plan, so the list of VPCs for a VPC IP leaves it out.
See [VPCs](/tir/tir-vpc/concepts/vpcs/) and [Reserved IPs](/tir/tir-reserved-ip/concepts/reserved-ips/).