# CompleteDNS

**Canonical:** https://apis.io/providers/completedns/  
**Website:** https://completedns.com/  
**APIs profiled:** 2

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.

## Kin Score — 37.8 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 37.8).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 60.1 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 35.7 |
| Commercial Clarity | 32.9 |
| Access Clarity | 32.9 |

## Agent readiness — 34.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (2)

- **CompleteDNS DNS History API** — Nameserver and drop history for a domain
- **CompleteDNS NS History API** — Nameserver history (legacy) for a domain

## Agentic access (1)

- **Completedns Agentic Access** — 2 operations

## Security (2)

- **Completedns Authentication** — apiKey · 1 scheme
- **Completedns Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Completedns Plans Pricing**

## Tags

DNS, DNS History, Domain Intelligence, Domains, Nameservers, Threat Intelligence

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/completedns/). Scores are computed from the provider's own public artifacts under a published rubric.