> ## Documentation Index > Fetch the complete documentation index at: https://gcore.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Update subnet ## OpenAPI ````yaml /api-reference/services_documented/cloud_api.yaml patch /cloud/v1/subnets/{project_id}/{region_id}/{subnet_id} openapi: 3.1.0 info: title: Gcore OpenAPI – Cloud API description: >- This OpenAPI is an aggregated OpenAPI specification that unifies all Gcore products into a single file. It covers Cloud, CDN, DNS, WAAP, DDoS Protection, Object Storage, Streaming, and FastEdge services. version: '2026-05-11T15:10:30.328297+00:00' servers: - url: https://api.gcore.com security: - APIKey: [] tags: - name: Bare Metal x-displayName: Bare Metal - name: Container as a Service x-displayName: Container as a Service - name: Cost Reports x-displayName: Cost Reports - name: DDoS Protection x-displayName: DDoS Protection - name: Everywhere Inference x-displayName: Everywhere Inference - name: Everywhere Inference Apps x-displayName: Everywhere Inference Apps - name: File Shares x-displayName: File Shares - name: Floating IPs x-displayName: Floating IPs - name: Function as a Service x-displayName: Function as a Service - name: GPU Bare Metal x-displayName: GPU Bare Metal - name: GPU Virtual x-displayName: GPU Virtual - name: IP Ranges x-displayName: IP Ranges - name: Images x-displayName: Images - name: Instances x-displayName: Instances - name: Load Balancers x-displayName: Load Balancers - name: Logging x-displayName: Logging - name: Managed Kubernetes x-displayName: Managed Kubernetes - name: Managed PostgreSQL x-displayName: Managed PostgreSQL - name: Networks x-displayName: Networks - name: Placement Groups x-displayName: Placement Groups - name: Projects x-displayName: Projects - name: Quotas x-displayName: Quotas - name: Regions x-displayName: Regions - name: Registry x-displayName: Registry - name: Reservations x-displayName: Reservations - name: Reserved IPs x-displayName: Reserved IPs - name: Routers x-displayName: Routers - name: SSH Keys x-displayName: SSH Keys - name: Secrets x-displayName: Secrets - name: Security Groups x-displayName: Security Groups - name: Snapshot Schedules x-displayName: Snapshot Schedules - name: Snapshots x-displayName: Snapshots - name: Tasks x-displayName: Tasks - name: User Actions x-displayName: User Actions - name: User Role Assignments x-displayName: User Role Assignments - name: Volumes x-displayName: Volumes paths: /cloud/v1/subnets/{project_id}/{region_id}/{subnet_id}: patch: tags: - Networks summary: Update subnet operationId: SubnetInstanceViewSet.patch parameters: - in: path name: project_id required: true description: Project ID schema: description: Project ID example: 1 examples: - 1 title: Project Id type: integer - in: path name: region_id required: true description: Region ID schema: description: Region ID example: 1 examples: - 1 title: Region Id type: integer - in: path name: subnet_id required: true description: Subnet ID schema: description: Subnet ID example: b39792c3-3160-4356-912e-ba396c95cdcf examples: - b39792c3-3160-4356-912e-ba396c95cdcf format: uuid4 title: Subnet Id type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/PatchSubnetSerializer' responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/SubnetSerializer' x-codeSamples: - lang: Python source: |- import os from gcore import Gcore client = Gcore( api_key=os.environ.get("GCORE_API_KEY"), # This is the default and can be omitted ) subnet = client.cloud.networks.subnets.update( subnet_id="b39792c3-3160-4356-912e-ba396c95cdcf", project_id=1, region_id=1, ) print(subnet.cidr) - lang: Go source: "package main\n\nimport (\n\t\"context\"\n\t\"fmt\"\n\n\t\"github.com/G-Core/gcore-go\"\n\t\"github.com/G-Core/gcore-go/cloud\"\n\t\"github.com/G-Core/gcore-go/option\"\n)\n\nfunc main() {\n\tclient := gcore.NewClient(\n\t\toption.WithAPIKey(\"My API Key\"),\n\t)\n\tsubnet, err := client.Cloud.Networks.Subnets.Update(\n\t\tcontext.TODO(),\n\t\t\"b39792c3-3160-4356-912e-ba396c95cdcf\",\n\t\tcloud.NetworkSubnetUpdateParams{\n\t\t\tProjectID: gcore.Int(1),\n\t\t\tRegionID: gcore.Int(1),\n\t\t},\n\t)\n\tif err != nil {\n\t\tpanic(err.Error())\n\t}\n\tfmt.Printf(\"%+v\\n\", subnet.Cidr)\n}\n" components: schemas: PatchSubnetSerializer: properties: dns_nameservers: anyOf: - items: format: ipvanyaddress type: string type: array - type: 'null' default: null description: List IP addresses of DNS servers to advertise via DHCP. examples: - - 8.8.4.4 - 1.1.1.1 title: Dns Nameservers enable_dhcp: description: True if DHCP should be enabled example: true examples: - true title: Enable Dhcp type: boolean gateway_ip: anyOf: - format: ipvanyaddress type: string - type: 'null' description: >- Default GW IPv4 address to advertise in DHCP routes in this subnet. Omit this field to let the cloud backend allocate it automatically. Set to null if no gateway must be advertised by this subnet's DHCP (useful when attaching instances to multiple subnets in order to prevent default route conflicts). examples: - 192.168.10.1 title: Gateway Ip host_routes: anyOf: - items: $ref: '#/components/schemas/RouteInSerializer' type: array - type: 'null' default: null description: List of custom static routes to advertise via DHCP. examples: - - destination: 10.0.3.0/24 nexthop: 10.0.0.13 title: Host Routes name: anyOf: - pattern: ^[a-zA-Z0-9][a-zA-Z 0-9._\-]{1,61}[a-zA-Z0-9._]$ type: string - type: 'null' default: null description: Name examples: - some_name title: Name tags: anyOf: - $ref: '#/components/schemas/UpdateTagsSerializer' - type: 'null' description: >- Update key-value tags using JSON Merge Patch semantics (RFC 7386). Provide key-value pairs to add or update tags. Set tag values to `null` to remove tags. Unspecified tags remain unchanged. Read-only tags are always preserved and cannot be modified. **Examples:** - **Add/update tags:** `{'tags': {'environment': 'production', 'team': 'backend'}}` adds new tags or updates existing ones. - **Delete tags:** `{'tags': {'old_tag': null}}` removes specific tags. - **Remove all tags:** `{'tags': null}` removes all user-managed tags (read-only tags are preserved). - **Partial update:** `{'tags': {'environment': 'staging'}}` only updates specified tags. - **Mixed operations:** `{'tags': {'environment': 'production', 'cost_center': 'engineering', 'deprecated_tag': null}}` adds/updates 'environment' and 'cost_center' while removing 'deprecated_tag', preserving other existing tags. - **Replace all:** first delete existing tags with null values, then add new ones in the same request. examples: - my-tag: my-tag-value my-tag-to-remove: null title: PatchSubnetSerializer type: object SubnetSerializer: properties: available_ips: anyOf: - type: integer - type: 'null' default: null description: Number of available ips in subnet examples: - 250 title: Available Ips cidr: description: CIDR example: 192.168.13.0/24 examples: - 192.168.13.0/24 format: ipvanynetwork title: Cidr type: string created_at: description: Datetime when the subnet was created example: 2019-06-13T13:58:12+0000 examples: - 2019-06-13T13:58:12+0000 format: date-time title: Created At type: string creator_task_id: anyOf: - format: uuid4 type: string - type: 'null' default: null description: Task that created this entity examples: - 5cc890da-d031-4a23-ac31-625edfa22812 title: Creator Task Id dns_nameservers: anyOf: - items: format: ipvanyaddress type: string type: array - type: 'null' default: null description: List IP addresses of a DNS resolver reachable from the network examples: - - 8.8.8.8 - 8.8.4.4 title: Dns Nameservers enable_dhcp: description: True if DHCP should be enabled example: true examples: - true title: Enable Dhcp type: boolean gateway_ip: anyOf: - format: ipvanyaddress type: string - type: 'null' default: null description: >- Default GW IPv4 address, advertised in DHCP routes of this subnet. If null, no gateway is advertised by this subnet. examples: - 192.168.13.1 title: Gateway Ip has_router: default: false deprecated: true description: Deprecated. Always returns `false`. example: false examples: - false title: Has Router type: boolean host_routes: anyOf: - items: $ref: '#/components/schemas/RouteOutSerializer' type: array - type: 'null' default: null description: List of custom static routes to advertise via DHCP. examples: - [] title: Host Routes id: anyOf: - format: uuid4 type: string - type: 'null' default: null description: Subnet id. examples: - b39792c3-3160-4356-912e-ba396c95cdcf title: Id ip_version: $ref: '#/components/schemas/IPVersion' description: IP version examples: - 4 name: description: Subnet name example: subnet_3 examples: - subnet_3 pattern: ^[a-zA-Z0-9][a-zA-Z 0-9._\-]{1,61}[a-zA-Z0-9._]$ title: Name type: string network_id: description: Network ID example: b30d0de7-bca2-4c83-9c57-9e645bd2cc92 examples: - b30d0de7-bca2-4c83-9c57-9e645bd2cc92 format: uuid4 title: Network Id type: string project_id: description: Project ID example: 1337 examples: - 1337 title: Project Id type: integer region: description: Region name example: Luxembourg 1 examples: - Luxembourg 1 title: Region type: string region_id: description: Region ID example: 7 examples: - 7 title: Region Id type: integer tags: description: >- List of key-value tags associated with the resource. A tag is a key-value pair that can be associated with a resource, enabling efficient filtering and grouping for better organization and management. Some tags are read-only and cannot be modified by the user. Tags are also integrated with cost reports, allowing cost data to be filtered based on tag keys or values. example: - key: my-tag read_only: false value: my-tag-value examples: - - key: my-tag read_only: false value: my-tag-value items: $ref: '#/components/schemas/TagSerializer' title: Tags type: array task_id: anyOf: - format: uuid4 type: string - type: 'null' default: null description: >- The UUID of the active task that currently holds a lock on the resource. This lock prevents concurrent modifications to ensure consistency. If `null`, the resource is not locked. examples: - null title: Task Id total_ips: anyOf: - type: integer - type: 'null' default: null description: Total number of ips in subnet examples: - 253 title: Total Ips updated_at: description: Datetime when the subnet was last updated example: 2019-06-13T13:58:12+0000 examples: - 2019-06-13T13:58:12+0000 format: date-time title: Updated At type: string required: - project_id - region_id - region - name - network_id - ip_version - enable_dhcp - cidr - tags - created_at - updated_at title: SubnetSerializer type: object RouteInSerializer: properties: destination: description: CIDR of destination IPv4 or IPv6 subnet. example: 10.0.3.0/24 examples: - 10.0.3.0/24 format: ipvanynetwork title: Destination type: string nexthop: description: >- IPv4 or IPv6 address to forward traffic to if it's destination IP matches 'destination' CIDR. example: 10.0.0.13 examples: - 10.0.0.13 format: ipvanyaddress title: Nexthop type: string required: - destination - nexthop title: RouteInSerializer type: object UpdateTagsSerializer: patternProperties: ^[^\s=]+$: anyOf: - maxLength: 255 minLength: 1 pattern: ^[^ \t\n\r\f\v]([^\t\n\r\f\v]*[^ \t\n\r\f\v])?$ type: string - type: 'null' description: >- Tag value. Maximum 255 characters. Cannot contain tabs, newlines, empty string or start/end with whitespace. Set to `null` in order to delete this tag. examples: - my-tag-value propertyNames: description: >- Tag key. Maximum 255 characters. Cannot contain spaces, tabs, newlines, empty string or '=' character. examples: - my-tag maxLength: 255 minLength: 1 title: UpdateTagsSerializer type: object RouteOutSerializer: properties: destination: description: CIDR of destination IPv4 or IPv6 subnet. example: 10.0.3.0/24 examples: - 10.0.3.0/24 format: ipvanynetwork title: Destination type: string nexthop: description: >- IPv4 or IPv6 address to forward traffic to if it's destination IP matches 'destination' CIDR. example: 10.0.0.13 examples: - 10.0.0.13 format: ipvanyaddress title: Nexthop type: string required: - destination - nexthop title: RouteOutSerializer type: object IPVersion: enum: - 4 - 6 title: IPVersion type: integer TagSerializer: description: >- A tag is a key-value pair that can be associated with a resource, enabling efficient filtering and grouping for better organization and management. Some tags are read-only and cannot be modified by the user. Tags are also integrated with cost reports, allowing cost data to be filtered based on tag keys or values. properties: key: description: >- Tag key. Maximum 255 characters. Cannot contain spaces, tabs, newlines, empty string or '=' character. example: my-tag examples: - my-tag title: Key type: string read_only: description: If true, the tag is read-only and cannot be modified by the user example: false examples: - false title: Read Only type: boolean value: description: >- Tag value. Maximum 255 characters. Cannot contain spaces, tabs, newlines, empty string or '=' character. example: my-tag-value examples: - my-tag-value title: Value type: string required: - key - value - read_only title: TagSerializer type: object securitySchemes: APIKey: description: >- API key for authentication. Make sure to include the word `apikey`, followed by a single space and then your token. Example: `apikey 1234$abcdef` type: apiKey in: header name: Authorization ````