이 가이드의 작업을 완료하는 데 필요한 권한을 얻으려면 관리자에게 프로젝트에 대한 Compute 공개 IP 관리자(roles/compute.publicIpAdmin) IAM 역할을 부여해 달라고 요청하세요.
역할 부여에 대한 자세한 내용은 프로젝트, 폴더, 조직에 대한 액세스 관리를 참조하세요.
하위 프리픽스를 만들어 공개 위임 프리픽스를 더 작은 IP 주소 범위로 나눌 수 있습니다. 하위 프리픽스는 공개 위임 프리픽스 상위 요소가 있는 공개 위임 프리픽스입니다.
하위 프리픽스 이름은 리소스를 삭제하고 다시 만들어야 변경할 수 있습니다.
이러한 이유로 변경할 필요가 없는 일반적인 이름을 만드는 것이 좋습니다. 예를 들어 sub-203-0-113-0-28의 경우 sub 는 리소스 유형을 나타내고 203-0-113-0-28는 특정 프리픽스와 프리픽스 길이를 나타냅니다.
공지된 공개 프리픽스에서 공개 위임 프리픽스를 최대 세 번 하위 위임할 수 있습니다. 예를 들어 IP 주소 범위 203.0.113.0/24가 포함된 공지된 공개 프리픽스가 있는 경우 다음을 수행할 수 있습니다.
공지된 공개 프리픽스에서 IP 주소 범위가 203.0.113.0/25인 공개 위임 프리픽스를 만듭니다.
이전 공개 위임 프리픽스를 상위 요소로 포함하는 IP 주소 범위 203.0.113.0/26을 사용하여 하위 프리픽스를 만듭니다.
이전 하위 프리픽스를 상위 요소로 포함하는 IP 주소 범위 203.0.113.0/27을 사용하여 하위 프리픽스를 만듭니다.
이 시점에서 203.0.113.0/27 하위 프리픽스를 상위 요소로 포함하는 추가 하위 프리픽스를 만들 수 없습니다.
공개 위임 프리픽스 또는 하위 프리픽스에서 주소를 만드는 경우 해당 프리픽스를 더 이상 세분화할 수 없습니다.
공개 위임 프리픽스 또는 하위 프리픽스에서 만드는 IP 주소는 고정 외부 IP 주소이며 리전 또는 전역입니다. 공개 위임 프리픽스 또는 하위 프리픽스의 모든 IP 주소가 공개되고 예약된 네트워크 주소 또는 브로드캐스트 주소가 없습니다. 예를 들어 /28 공개 위임 프리픽스 또는 하위 프리픽스에서 IP 주소를 만들면 16개 IP 주소 리소스가 생성됩니다.
모든 고정 외부 IP 주소를 나열할 수 있습니다.
이 목록에는 Google Cloud에 가져온 IP 주소 및 Google Cloud에서 제공하는 IP 주소가 포함됩니다.
BYOIP 주소는 일관된 형식의 이름을 사용하여 생성됩니다. 예를 들어 203.0.113.144에는 address-203-0-113-144라는 이름이 할당됩니다.
[[["이해하기 쉬움","easyToUnderstand","thumb-up"],["문제가 해결됨","solvedMyProblem","thumb-up"],["기타","otherUp","thumb-up"]],[["이해하기 어려움","hardToUnderstand","thumb-down"],["잘못된 정보 또는 샘플 코드","incorrectInformationOrSampleCode","thumb-down"],["필요한 정보/샘플이 없음","missingTheInformationSamplesINeed","thumb-down"],["번역 문제","translationIssue","thumb-down"],["기타","otherDown","thumb-down"]],["최종 업데이트: 2025-09-05(UTC)"],[],[],null,["# Create IPv4 sub-prefixes and IPv4 addresses\n===========================================\n\nThis page describes how to divide your IPv4 public delegated prefix and create\nBYOIP addresses to use with Google Cloud resources. You can create IPv4\nBYOIP addresses from a public delegated prefix or sub-prefix.\n\nIf you want to divide an IPv6 public delegated prefix, see [Create IPv6\nsub-prefixes](/vpc/docs/create-ipv6-sub-prefixes).\n\nBefore you begin\n----------------\n\n1. Create an IPv4 [public advertised prefix](/vpc/docs/create-pap).\n2. Create an IPv4 [public delegated prefix](/vpc/docs/create-pdp).\n\n### Roles\n\n\nTo get the permissions that\nyou need to complete the tasks in this guide,\n\nask your administrator to grant you the\n\n\n[Compute Public IP Admin](/iam/docs/roles-permissions/compute#compute.publicIpAdmin) (`roles/compute.publicIpAdmin`)\nIAM role on your project.\n\n\nFor more information about granting roles, see [Manage access to projects, folders, and organizations](/iam/docs/granting-changing-revoking-access).\n\n\nYou might also be able to get\nthe required permissions through [custom\nroles](/iam/docs/creating-custom-roles) or other [predefined\nroles](/iam/docs/roles-overview#predefined).\n\nCreate sub-prefixes\n-------------------\n\nYou can divide a public delegated prefix into smaller IP address ranges by\ncreating a sub-prefix. A sub-prefix is a public delegated prefix that has a\npublic delegated prefix parent.\n\nA sub-prefix name can't be changed without deleting and recreating the resource.\nFor this reason, we recommend that you create generic names that won't need to\nchange---for example, `sub-203-0-113-0-28`, where `sub` denotes the resource\ntype and `203-0-113-0-28` denotes the specific prefix and prefix length.\n\nA public delegated prefix can be sub-delegated up to three times from a public\nadvertised prefix. For example, if you have a public advertised prefix with IP\naddress range `203.0.113.0/24`, you can do the following:\n\n- Create a public delegated prefix with IP address range `203.0.113.0/25` from the public advertised prefix.\n- Create a sub-prefix with IP address range `203.0.113.0/26` that has the previous public delegated prefix as its parent.\n- Create a sub-prefix with IP address range `203.0.113.0/27` that has the previous sub-prefix as its parent.\n\nAt this point, you cannot create further sub-prefixes that have the\n`203.0.113.0/27` sub-prefix as a parent. \n\n### Console\n\n1. In the Google Cloud console, go to **Bring your own IP**.\n\n [Go to Bring your own IP](https://console.cloud.google.com/networking/byoip)\n2. Click the public delegated prefix that you want to subdivide.\n\n3. Click **Create sub-prefix**.\n\n4. Enter a **Name** and optional **Description** for the sub-prefix.\n\n5. Select a **Prefix length** for the sub-prefix.\n\n6. Select **IP addresses** for the sub-prefix.\n\n7. Select a **Project** for the sub-prefix. The IP addresses are made\n available in this project only.\n\n8. Click **Create**.\n\n### gcloud\n\nTo create a sub-prefix from a public delegated prefix, use the\n[`public-delegated-prefixes delegated-sub-prefixes create`\ncommand](/sdk/gcloud/reference/compute/public-delegated-prefixes/delegated-sub-prefixes/create) \n\n```\ngcloud compute public-delegated-prefixes \\\n delegated-sub-prefixes \\\n create SUB_PREFIX_NAME \\\n --range=SUB_PREFIX_RANGE \\\n --public-delegated-prefix=PDP_NAME \\\n --public-delegated-prefix-region=PDP_REGION \\\n --delegatee-project=PROJECT_ID\n```\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003eSUB_PREFIX_NAME\u003c/var\u003e: a name for the sub-prefix that you\n are creating.\n\n- \u003cvar translate=\"no\"\u003eSUB_PREFIX_RANGE\u003c/var\u003e: the IP address range for the\n sub-prefix that you are creating.\n\n- \u003cvar translate=\"no\"\u003ePDP_NAME\u003c/var\u003e: the parent public delegated prefix or\n sub-prefix that contains the sub-prefix you are creating.\n\n- \u003cvar translate=\"no\"\u003ePDP_REGION\u003c/var\u003e: the region of the public delegated prefix\n or sub-prefix that contains the sub-prefix you are creating.\n\n- \u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e: an optional project ID for the\n sub-prefix. The following describes the behavior for this value:\n\n - If you specify a value, the IP addresses are available only in the\n specified project.\n\n - If you don't use `--delegatee-project`, the IP addresses are\n available in the same project as the sub-prefix's parent public\n delegated prefix or sub-prefix.\n\nList prefixes\n-------------\n\nYou can list all public advertised prefixes and public delegated prefixes\n(including sub-prefixes) in a project. \n\n### Console\n\n1. In the Google Cloud console, go to **Bring your own IP**.\n\n [Go to Bring your own IP](https://console.cloud.google.com/networking/byoip)\n2. All public advertised prefixes, public delegated prefixes, and\n sub-prefixes are displayed.\n\n### gcloud\n\nTo list public delegated prefixes, including sub-prefixes, use the\n[`public-delegated-prefixes list`\ncommand](/sdk/gcloud/reference/compute/public-delegated-prefixes/list). \n\n```\ngcloud compute public-delegated-prefixes list\n```\n\nCreate IP addresses\n-------------------\n\nWhen you create addresses from a public delegated prefix or sub-prefix, you\ncannot further sub-divide that prefix.\n\nThe [IP addresses](/vpc/docs/ip-addresses) that you create from a public\ndelegated prefix or sub-prefix are static external IP addresses and can be\nregional or global. All IP addresses in the public delegated prefix or\nsub-prefix are made available; there is no reserved network address or broadcast\naddress. For example, if you create IP addresses from a `/28` public delegated\nprefix or sub-prefix, 16 IP address resources are created.\n\nYou can [list all static external IP\naddresses](/compute/docs/ip-addresses/reserve-static-external-ip-address#list_ip).\nThis list includes IP addresses that you have brought to Google Cloud\nand IP addresses that are provided by Google Cloud.\n\nBYOIP addresses are created with names in a consistent format. For example,\n`203.0.113.144` is assigned the name `address-203-0-113-144`. \n\n### Console\n\n1. In the Google Cloud console, go to **Bring your own IP**.\n\n [Go to Bring your own IP](https://console.cloud.google.com/networking/byoip)\n2. Click the public delegated prefix or sub-prefix that you want to create\n IP addresses in.\n\n3. Click **Create addresses**.\n\n4. Select the **Prefix length**.\n\n5. Select the range of **IP addresses** you want to create.\n\n6. Click **Create addresses**.\n\n### gcloud\n\nTo create IP addresses from a public delegated prefix or sub-prefix, use the\n[`public-delegated-prefixes delegated-sub-prefixes create`\ncommand](/sdk/gcloud/reference/compute/public-delegated-prefixes/delegated-sub-prefixes/create). \n\n```\ngcloud compute public-delegated-prefixes \\\n delegated-sub-prefixes \\\n create ADDRESSES_NAME \\\n --create-addresses \\\n --public-delegated-prefix=PDP_NAME \\\n --public-delegated-prefix-region=PDP_REGION\n```\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003eADDRESSES_NAME\u003c/var\u003e: a name for the group of addresses\n that you are creating.\n\n- \u003cvar translate=\"no\"\u003ePDP_NAME\u003c/var\u003e: the public delegated prefix or sub-prefix\n that you are creating IP addresses for.\n\n- \u003cvar translate=\"no\"\u003ePDP_REGION\u003c/var\u003e: the region of the public delegated prefix\n or sub-prefix that you are creating IP addresses for.\n\nWhat's next\n-----------\n\n- [Manage BGP announcement (v2)](/vpc/docs/manage-bgp-announcement)"]]
