> ## Documentation Index > Fetch the complete documentation index at: https://help.onetsolutions.net/llms.txt > Use this file to discover all available pages before exploring further. # [Domains] Update domain WHOIS contacts > Update the WHOIS contact information for a domain including registrant, administrative, technical, and billing contacts. Contact changes are submitted to the registry and may require verification depending on the TLD. Some registries may initiate a transfer verification process when changing registrant information. ## OpenAPI ````yaml https://api.onetsolutions.net/schema put /v1/organizations/{organization_id}/projects/{project_id}/domains/{id}/contacts openapi: 3.0.3 info: title: OnetSolutions API version: v1 (v1) description: > ## Overview The OnetSolutions API provides programmatic access to manage your cloud infrastructure, domains, and web hosting services. ## Authentication All API requests require authentication using one of the following methods: - **JWT Token**: Obtain a token via login endpoints and include it in the `Authorization: Bearer ` header - **API Key**: Generate an API key from your account settings and use it as `Authorization: Bearer sk-onetsolutions-...` ## Rate Limiting API requests are rate-limited to ensure fair usage: - **Standard**: 1000 requests per minute - **Burst**: 100 requests per second ## Pagination List endpoints return paginated results. Use `page` and `page_size` query parameters. ## Error Handling The API uses standard HTTP status codes: - `200` Success - `201` Created - `400` Bad Request - `401` Unauthorized - `403` Forbidden - `404` Not Found - `429` Too Many Requests servers: - url: https://api.onetsolutions.net description: Production security: [] tags: - name: Authentication description: >- Login, passwordless authentication, MFA, OAuth providers, and token management. - name: Organizations description: >- Organization management, members, roles, modules, audit logs, and notification settings. - name: Projects description: Project management, team members, and project-scoped resources. - name: Compute description: >- Cloud instances, volumes, snapshots, backups, VPCs, firewalls, SSH keys, uptime monitors, and instance tasks. - name: Domains description: >- Domain availability, registration, transfers, DNS zones, DNS records, and TLD information. - name: Web Hosting description: >- cPanel-based web hosting, emails, databases, subdomains, FTP accounts, addon domains, and SSL certificates. paths: /v1/organizations/{organization_id}/projects/{project_id}/domains/{id}/contacts: put: tags: - Domains summary: '[Domains] Update domain WHOIS contacts' description: >- Update the WHOIS contact information for a domain including registrant, administrative, technical, and billing contacts. Contact changes are submitted to the registry and may require verification depending on the TLD. Some registries may initiate a transfer verification process when changing registrant information. operationId: update_domain_contacts parameters: - in: path name: id schema: type: string description: The unique identifier (UUID) of the domain required: true - in: path name: organization_id schema: type: string format: uuid required: true - in: path name: project_id schema: type: string format: uuid required: true requestBody: content: application/json: schema: $ref: '#/components/schemas/DomainContactsUpdate' responses: '202': content: application/json: schema: $ref: '#/components/schemas/DomainTask' description: Contact update task created and queued for processing '400': description: Invalid contact information or contact does not exist '401': description: Authentication credentials were not provided or are invalid '403': description: You do not have permission to update contacts for this domain '404': description: Domain not found or does not belong to the specified project security: - BearerAuth: [] components: schemas: DomainContactsUpdate: type: object properties: registrant_first_name: type: string maxLength: 100 registrant_last_name: type: string maxLength: 100 registrant_organization: type: string maxLength: 255 registrant_email: type: string format: email registrant_phone: type: string maxLength: 50 registrant_address_1: type: string maxLength: 255 registrant_address_2: type: string maxLength: 255 registrant_city: type: string maxLength: 100 registrant_state: type: string maxLength: 100 registrant_postcode: type: string maxLength: 20 registrant_country: type: string maxLength: 2 admin_first_name: type: string maxLength: 100 admin_last_name: type: string maxLength: 100 admin_organization: type: string maxLength: 255 admin_email: type: string format: email admin_phone: type: string maxLength: 50 admin_address_1: type: string maxLength: 255 admin_address_2: type: string maxLength: 255 admin_city: type: string maxLength: 100 admin_state: type: string maxLength: 100 admin_postcode: type: string maxLength: 20 admin_country: type: string maxLength: 2 tech_first_name: type: string maxLength: 100 tech_last_name: type: string maxLength: 100 tech_organization: type: string maxLength: 255 tech_email: type: string format: email tech_phone: type: string maxLength: 50 tech_address_1: type: string maxLength: 255 tech_address_2: type: string maxLength: 255 tech_city: type: string maxLength: 100 tech_state: type: string maxLength: 100 tech_postcode: type: string maxLength: 20 tech_country: type: string maxLength: 2 DomainTask: type: object properties: id: type: string format: uuid readOnly: true task_type: enum: - register - transfer_in - transfer_out - renew - update_nameservers - update_contacts - get_epp_code - enable_whois_privacy - disable_whois_privacy - lock_domain - unlock_domain - create_dns_zone - delete_dns_zone - create_dns_record - update_dns_record - delete_dns_record - sync_dns_records type: string description: |- * `register` - register * `transfer_in` - transfer in * `transfer_out` - transfer out * `renew` - renew * `update_nameservers` - update nameservers * `update_contacts` - update contacts * `get_epp_code` - get epp code * `enable_whois_privacy` - enable whois privacy * `disable_whois_privacy` - disable whois privacy * `lock_domain` - lock domain * `unlock_domain` - unlock domain * `create_dns_zone` - create dns zone * `delete_dns_zone` - delete dns zone * `create_dns_record` - create dns record * `update_dns_record` - update dns record * `delete_dns_record` - delete dns record * `sync_dns_records` - sync dns records x-spec-enum-id: 6ee18353e5c18552 readOnly: true status: enum: - pending - running - completed - failed - cancelled type: string description: |- * `pending` - pending * `running` - running * `completed` - completed * `failed` - failed * `cancelled` - cancelled x-spec-enum-id: 98ec782c9f2a2c36 readOnly: true created: type: string format: date-time readOnly: true started_at: type: string format: date-time readOnly: true nullable: true completed_at: type: string format: date-time readOnly: true nullable: true required: - completed_at - created - id - started_at - status - task_type securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: JWT or API Key description: >- Use `Authorization: Bearer ` header. Token can be a JWT token or an API key (format: `sk-onetsolutions-...`). ````