CompleteDNS is a DNS research platform that tracks nameserver modifications and domain drops, with over twenty years of history and billions of recorded changes. The CompleteDNS API exposes domain-scoped lookups that return the chronological history of nameserver changes, drop events, and parking status for a given domain. Both a current v2 API and a legacy v1 API are available, authenticated by API key.
APIs.json: https://raw.githubusercontent.com/api-evangelist/completedns/refs/heads/main/apis.yml
- Type: Index
- Position: Consumer
- Access: 3rd-Party
- DNS
- DNS History
- Domain Intelligence
- Domains
- Nameservers
- Threat Intelligence
- Created: 2025-02-09
- Modified: 2026-05-19
The CompleteDNS API v2 returns the historical nameserver record for a domain, including counts of changes and drops, years of history, and a chronologically ordered list of events. Authentication uses an API key passed as a query parameter.
- Human URL: https://completedns.com/api/documentation/v2
- Base URL:
https://api.completedns.com/v2
- DNS History
- Domains
- Lookup
- Nameservers
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Spectral Rules
The CompleteDNS API v1 (legacy) returns the historical nameserver record for a domain. Includes drop and change counts, TLD support indicator, and chronologically ordered events with added/removed nameservers. CompleteDNS recommends migrating to v2.
- Human URL: https://completedns.com/api/documentation/v1
- Base URL:
https://api.completedns.com/v1
- DNS History
- Legacy
- Lookup
- Nameservers
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Spectral Rules
- Portal
- Documentation
- Sign Up
- Login
- Pricing
- Contact
- Terms of Service
- Privacy Policy
- JSON-LD — JSON-LD
- JSON Schema — JSON Schema
FN: Kin Lane Email: [email protected]