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How to Attach Reserved IPs to a Vultr Cloud Compute Instance

Updated on 28 August, 2025

Reserved IPs allow you to reserve a specific public IP address you can assign to a Vultr Cloud Compute instance. You can attach multiple reserved IPs to a single instance to enable advanced networking capabilities like routing and IP forwarding with distinct public IP addresses.

Follow this guide to attach reserved IPs on a Vultr Cloud Compute instance using the Vultr Customer Portal, API, CLI, or Terraform.

  • Vultr Customer Portal
  • Vultr API
  • Vultr CLI
  • Terraform
  1. Navigate to Products, expand the Network group and click Reserved IPs.
  2. Click your target reserved IP to open its management page.
  3. Click the Attach to Server drop-down and select your target Vultr Cloud Compute instance.
  4. Click Attach to apply the reserved IP to the Vultr Cloud Compute instance.

  1. Send a GET request to the List Instances endpoint and note your target instance's ID.

    console 
    $ curl "https://api.vultr.com/v2/instances" \
  -X GET \
  -H "Authorization: Bearer ${VULTR_API_KEY}"

  2. Send a GET request to the List Reserved IPs endpoint and note the target reserved IP's ID.

    console 
    $ curl "https://api.vultr.com/v2/reserved-ips" \
   -X GET \
   -H "Authorization: Bearer ${VULTR_API_KEY}"

  3. Send a POST request to the Attach Reserved IP endpoint to attach the reserved IP to the instance.

    console 
    $ curl "https://api.vultr.com/v2/reserved-ips/{reserved-ip}/attach" \
  -X POST \
  -H "Authorization: Bearer ${VULTR_API_KEY}" \
  -H "Content-Type: application/json" \
  --data '{
    "instance_id" : "<instance-id>"
  }'

  1. List all reserved IPs in your Vultr account and note the target reserved IP's ID.

    console 
    $ vultr-cli reserved-ip list

  2. List all available instances and note your target instance's ID.

    console 
    $ vultr-cli instance list

  3. Attach the reserved IP to the instance.

    console 
    $ vultr-cli reserved-ip attach <reserved-ip-id> --instance-id <instance-id>

  1. Open your Terraform configuration for the existing Cloud Compute instance.

  2. Add the vultr_reserved_ip resource and reference its id in the instance’s reserved_ip_id field.

    terraform 
    resource "vultr_reserved_ip" "public_ip" {
    region = "del"
    ip_type = "v4"
    label   = "cc-reserved-ip"
}

resource "vultr_instance" "cc" {
    label           = "cc-instance-1"
    region          = "del"
    plan            = "vc2-2c-4gb"
    os_id           = 1743
    reserved_ip_id  = vultr_reserved_ip.public_ip.id
}

  3. Apply the configuration and observe the following output:

    Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

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