CompleteDNS NS History API

openapi: 3.1.0
info:
  title: CompleteDNS API v1 DNS History NS History API
  description: The CompleteDNS API v1 returns the historical nameserver record for a domain (legacy version). The service tracks nameserver changes and domain drops and returns chronologically ordered events for a queried domain. Authentication is via an API key passed as a query string parameter. CompleteDNS recommends using the v2 API for new integrations.
  version: v1
  contact:
    name: CompleteDNS
    url: https://completedns.com/contact
  termsOfService: https://completedns.com/terms
servers:
- url: https://api.completedns.com/v1
  description: CompleteDNS v1 production API
security:
- apiKey: []
tags:
- name: NS History
  description: Nameserver history (legacy) for a domain
paths:
  /ns-history/{domain}:
    get:
      operationId: getNsHistory
      summary: Get nameserver history for a domain
      description: Returns the full history of nameserver changes and drop events for the requested domain. Response includes drop count, change count, years tracked, TLD support flag, and a chronologically ordered list of events.
      tags:
      - NS History
      parameters:
      - name: domain
        in: path
        required: true
        description: The fully qualified domain to look up.
        schema:
          type: string
          example: youtube.com
      - name: key
        in: query
        required: true
        description: API key issued in the CompleteDNS account API section.
        schema:
          type: string
      responses:
        '200':
          description: Nameserver history record for the domain.
          headers:
            requestsLeft:
              description: Number of API requests remaining in the current quota.
              schema:
                type: integer
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NsHistoryResponse'
        '400':
          description: Invalid domain.
        '401':
          description: Missing or invalid API key.
        '403':
          description: IP restriction or quota exhausted.
        '404':
          description: Domain not tracked.
components:
  schemas:
    NsHistoryResponse:
      type: object
      properties:
        drops:
          type: integer
          description: Total nameserver removal events recorded.
        changes:
          type: integer
          description: Total nameserver change events recorded.
        years:
          type: number
          description: Years of history tracked for the domain.
        supported:
          type: boolean
          description: Whether the queried TLD is supported.
        data:
          type: array
          items:
            $ref: '#/components/schemas/NsEvent'
    NsEvent:
      type: object
      properties:
        type:
          type: string
          enum:
          - started_tracking
          - ns_change
          - new_domain
          - deleted_domain
        date:
          type: string
        nameservers:
          type: array
          items:
            type: object
            properties:
              added_ns:
                type: string
              deleted_ns:
                type: string
  securitySchemes:
    apiKey:
      type: apiKey
      in: query
      name: key
externalDocs:
  description: CompleteDNS API v1 Documentation
  url: https://completedns.com/api/documentation/v1