Internet Assigned Numbers Authority

The Internet Assigned Numbers Authority (IANA) performs the global coordination of the DNS Root, IP addressing, and other Internet protocol resources. IANA maintains the protocol registries, top-level domain delegations, time zone database, and language subtag registry that the Internet relies on. Bulk registry data is published as machine-readable files distributed via rsync and FTP rather than through a public REST API.

Internet Assigned Numbers Authority is listed with 3 APIs on the APIs.io network. Tagged areas include Domains, DNS, IP Addressing, Media Types, and Protocol.

The Internet Assigned Numbers Authority catalog on APIs.io includes 1 Spectral governance ruleset.

Internet Assigned Numbers Authority’s developer surface includes product news, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

11.2/100 emerging ▬ flat Agent 1/100 human only Front door AI 1/6 silent Heartbeat 87/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

3 APIs

Domains DNSIP AddressingMedia Types Protocol Standards Timezone

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 11.2/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 1.3 / 17

Operational Transparency 1.2 / 11

Contract Governance 0.0 / 10

Discoverability 6.1 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

12 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 11.9 — up to +17.6 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/internet-assigned-numbers-authority/apis.yml: open an issue on github.com/api-evangelist/internet-assigned-numbers-authority to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Domains and DNS (registrars, registries, DNS)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

DNS

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

IANA Protocol Registries

The IANA Protocol Registries publish the authoritative assignments for Internet protocol parameters. Bulk registry data is available as XML, CSV, and plain-text files distribute...

IANA Time Zone Database

The IANA Time Zone Database (tz database) provides the canonical source of time zone and daylight saving rules used by operating systems and applications worldwide. Data and sou...

IANA Root Zone Database

The Root Zone Database represents the delegation details of top-level domains, including country code (ccTLD) and generic (gTLD) top-level domains.

Internet Assigned Numbers Authority API pricing

Not yet checked against Internet Assigned Numbers Authority's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Internet Assigned Numbers Authority's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Internet Assigned Numbers Authority Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Internet Assigned Numbers Authority Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Internet Assigned Numbers Authority Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Internet Assigned Numbers Authority API Rules

0 rules ·

SPECTRAL

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Internet Assigned Numbers Authority Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 4

The organization behind the API

LinkedIn

Website

Website

News

News

Blog

Blog

Source (apis.yml)

aid: internet-assigned-numbers-authority
name: Internet Assigned Numbers Authority
description: The Internet Assigned Numbers Authority (IANA) performs the global coordination of the DNS Root, IP addressing,
  and other Internet protocol resources. IANA maintains the protocol registries, top-level domain delegations, time zone database,
  and language subtag registry that the Internet relies on. Bulk registry data is published as machine-readable files distributed
  via rsync and FTP rather than through a public REST API.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/internet-assigned-numbers-authority.png
tags:
- Domains
- DNS
- IP Addressing
- Media Types
- Protocol
- Standards
- Timezone
tags_raw:
- Domains
- DNS
- IP Addressing
- Media Types
- Protocols
- Standards
- Time Zones
url: https://raw.githubusercontent.com/api-evangelist/internet-assigned-numbers-authority/refs/heads/main/apis.yml
created: '2025-08-25'
modified: '2026-04-28'
specificationVersion: '0.23'
apis:
- aid: internet-assigned-numbers-authority:iana-protocol-registries
  name: IANA Protocol Registries
  description: The IANA Protocol Registries publish the authoritative assignments for Internet protocol parameters. Bulk registry
    data is available as XML, CSV, and plain-text files distributed via rsync and FTP for programmatic consumption.
  humanURL: https://www.iana.org/protocols
  baseURL: https://www.iana.org/assignments/
  tags:
  - Protocol
  - Standards
  - Registries
  tags_raw:
  - Protocols
  - Standards
  - Registries
  properties:
  - type: Documentation
    url: https://www.iana.org/protocols
- aid: internet-assigned-numbers-authority:iana-time-zone-database
  name: IANA Time Zone Database
  description: The IANA Time Zone Database (tz database) provides the canonical source of time zone and daylight saving rules
    used by operating systems and applications worldwide. Data and source code are released as tarballs.
  humanURL: https://www.iana.org/time-zones
  baseURL: https://data.iana.org/time-zones/
  tags:
  - Timezone
  - Standards
  tags_raw:
  - Time Zones
  - Standards
  properties:
  - type: Documentation
    url: https://www.iana.org/time-zones
  - type: Bulk
    url: https://data.iana.org/time-zones/releases/
- aid: internet-assigned-numbers-authority:iana-root-zone-database
  name: IANA Root Zone Database
  description: The Root Zone Database represents the delegation details of top-level domains, including country code (ccTLD)
    and generic (gTLD) top-level domains.
  humanURL: https://www.iana.org/domains/root/db
  baseURL: https://www.iana.org/domains/
  tags:
  - DNS
  - Domains
  - Registries
  properties:
  - type: Documentation
    url: https://www.iana.org/domains/root/db
common:
- type: Plans
  url: plans/internet-assigned-numbers-authority-plans-pricing.yml
- type: RateLimits
  url: rate-limits/internet-assigned-numbers-authority-rate-limits.yml
- type: FinOps
  url: finops/internet-assigned-numbers-authority-finops.yml
- type: DomainSecurity
  url: security/internet-assigned-numbers-authority-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/ianaai
- type: Website
  url: https://www.iana.org/
- type: GitHubOrganization
  url: https://github.com/iana-org
- type: News
  url: https://www.iana.org/news
- url: https://www.iana.org/news.atom
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Internet Assigned Numbers Authority API — frequently asked questions

Does Internet Assigned Numbers Authority have an API?

Yes. APIs.io lists 3 APIs from Internet Assigned Numbers Authority, including IANA Protocol Registries, IANA Time Zone Database and IANA Root Zone Database.

How much does the Internet Assigned Numbers Authority API cost?

APIs.io lists 3 pricing plans for Internet Assigned Numbers Authority, with each plan's price, limits and inclusions under Pricing on this page.

Is the Internet Assigned Numbers Authority API ready for AI agents?

Internet Assigned Numbers Authority has a Kin Score of 11.2 out of 100 (emerging) and an Agent Readiness score of 0.6 (human-only), scored by API Evangelist on 2026-11-06.

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