NetworkCalc

NetworkCalc provides a free RESTful API platform for monitoring and managing business networks and domains. Public APIs include a subnet calculator, DNS tools, security tools, encoder, and binary converter, with additional authenticated APIs for alerts, authorization, domains, reports, and subnets.

NetworkCalc publishes 5 API contracts indexed on the APIs.io network, including Binary Converter API, DNS API, Encoder API, and 2 more. Tagged areas include Networking, DNS, Security, Subnetting, and Domains.

The NetworkCalc catalog on APIs.io includes 1 Spectral governance ruleset.

NetworkCalc’s developer surface includes engineering blog, documentation, and 6 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

22.7/100 emerging ▬ flat Agent 20/100 agent aware Front door AI 2/6 trace Heartbeat 92/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract

Networking DNS SecuritySubnettingDomains Calculator

Kin Score

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

Composite quality — 22.7/100 · emerging

Contract Quality 9.2 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 1.3 / 17

Operational Transparency 0.9 / 11

Contract Governance 1.4 / 10

Discoverability 5.6 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 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 4 / 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

7 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 11.9 — up to +17.6 composite points
Contract Quality scores 43.5 — up to +14.1 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/networkcalc/apis.yml: open an issue on github.com/api-evangelist/networkcalc 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 2

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

OpenAPI

measured — observed by APIs.io (published)

APIs 5

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

NetworkCalc Binary Converter API

Binary, decimal, and hexadecimal conversions.

NetworkCalc DNS API

DNS lookups and record queries.

NetworkCalc Encoder API

Encoding and decoding helpers.

NetworkCalc Security API

TLS/SSL certificate and security utilities.

NetworkCalc Subnet Calculator API

IPv4 and IPv6 subnet calculations.

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

NetworkCalc Binary Converter API

OPEN COLLECTION

NetworkCalc Binary Converter DNS API

OPEN COLLECTION

NetworkCalc Binary Converter Encoder API

OPEN COLLECTION

NetworkCalc Binary Converter Security API

OPEN COLLECTION

NetworkCalc Binary Converter Subnet Calculator API

OPEN COLLECTION

NetworkCalc API pricing

Not yet checked against NetworkCalc'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 NetworkCalc's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Networkcalc Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Networkcalc Rate Limits

5 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

NetworkCalc

SLA

FinOps 1

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

Networkcalc Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

NetworkCalc API Rules

44 rules · 42 errors 1 warnings 1 info

SPECTRAL

Security Posture 1

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

Networkcalc Domain Security

TLSv1.3 · HSTS · DNSSEC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Networkcalc Agentic Access

6 operations

6 operations · 0 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

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 2

The organization behind the API

Blog

Blog

Website

Website

Source (apis.yml)

aid: networkcalc
name: NetworkCalc
description: NetworkCalc provides a free RESTful API platform for monitoring and managing business networks and domains. Public
  APIs include a subnet calculator, DNS tools, security tools, encoder, and binary converter, with additional authenticated
  APIs for alerts, authorization, domains, reports, and subnets.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  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
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/networkcalc.png
tags:
- Networking
- DNS
- Security
- Subnetting
- Domains
- Calculator
created: '2025-02-09'
modified: '2026-10-06'
url: https://raw.githubusercontent.com/api-evangelist/networkcalc/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: networkcalc:networkcalc-binary-converter-api
  name: NetworkCalc Binary Converter API
  description: Binary, decimal, and hexadecimal conversions.
  humanURL: https://networkcalc.com/
  baseURL: https://networkcalc.com/api
  tags:
  - Binary Converter
  properties:
  - type: OpenAPI
    url: openapi/networkcalc-binary-converter-api-openapi.yml
  - type: Documentation
    url: https://networkcalc.com/api/docs
  - type: Subnet Calculator Docs
    url: https://networkcalc.com/api/docs/subnet-calculator
  - type: DNS Tools Docs
    url: https://networkcalc.com/api/docs/dns
  - type: Security Tools Docs
    url: https://networkcalc.com/api/docs/security
  - type: Encoder Docs
    url: https://networkcalc.com/api/docs/encoder
  - type: Binary Converter Docs
    url: https://networkcalc.com/api/docs/binary-converter
- aid: networkcalc:networkcalc-dns-api
  name: NetworkCalc DNS API
  description: DNS lookups and record queries.
  humanURL: https://networkcalc.com/
  baseURL: https://networkcalc.com/api
  tags:
  - DNS
  properties:
  - type: OpenAPI
    url: openapi/networkcalc-dns-api-openapi.yml
  - type: Documentation
    url: https://networkcalc.com/api/docs
  - type: Subnet Calculator Docs
    url: https://networkcalc.com/api/docs/subnet-calculator
  - type: DNS Tools Docs
    url: https://networkcalc.com/api/docs/dns
  - type: Security Tools Docs
    url: https://networkcalc.com/api/docs/security
  - type: Encoder Docs
    url: https://networkcalc.com/api/docs/encoder
  - type: Binary Converter Docs
    url: https://networkcalc.com/api/docs/binary-converter
- aid: networkcalc:networkcalc-encoder-api
  name: NetworkCalc Encoder API
  description: Encoding and decoding helpers.
  humanURL: https://networkcalc.com/
  baseURL: https://networkcalc.com/api
  tags:
  - Encoder
  properties:
  - type: OpenAPI
    url: openapi/networkcalc-encoder-api-openapi.yml
  - type: Documentation
    url: https://networkcalc.com/api/docs
  - type: Subnet Calculator Docs
    url: https://networkcalc.com/api/docs/subnet-calculator
  - type: DNS Tools Docs
    url: https://networkcalc.com/api/docs/dns
  - type: Security Tools Docs
    url: https://networkcalc.com/api/docs/security
  - type: Encoder Docs
    url: https://networkcalc.com/api/docs/encoder
  - type: Binary Converter Docs
    url: https://networkcalc.com/api/docs/binary-converter
- aid: networkcalc:networkcalc-security-api
  name: NetworkCalc Security API
  description: TLS/SSL certificate and security utilities.
  humanURL: https://networkcalc.com/
  baseURL: https://networkcalc.com/api
  tags:
  - Security
  properties:
  - type: OpenAPI
    url: openapi/networkcalc-security-api-openapi.yml
  - type: Documentation
    url: https://networkcalc.com/api/docs
  - type: Subnet Calculator Docs
    url: https://networkcalc.com/api/docs/subnet-calculator
  - type: DNS Tools Docs
    url: https://networkcalc.com/api/docs/dns
  - type: Security Tools Docs
    url: https://networkcalc.com/api/docs/security
  - type: Encoder Docs
    url: https://networkcalc.com/api/docs/encoder
  - type: Binary Converter Docs
    url: https://networkcalc.com/api/docs/binary-converter
- aid: networkcalc:networkcalc-subnet-calculator-api
  name: NetworkCalc Subnet Calculator API
  description: IPv4 and IPv6 subnet calculations.
  humanURL: https://networkcalc.com/
  baseURL: https://networkcalc.com/api
  tags:
  - Subnet Calculator
  properties:
  - type: OpenAPI
    url: openapi/networkcalc-subnet-calculator-api-openapi.yml
  - type: Documentation
    url: https://networkcalc.com/api/docs
  - type: Subnet Calculator Docs
    url: https://networkcalc.com/api/docs/subnet-calculator
  - type: DNS Tools Docs
    url: https://networkcalc.com/api/docs/dns
  - type: Security Tools Docs
    url: https://networkcalc.com/api/docs/security
  - type: Encoder Docs
    url: https://networkcalc.com/api/docs/encoder
  - type: Binary Converter Docs
    url: https://networkcalc.com/api/docs/binary-converter
common:
- type: Plans
  url: plans/networkcalc-plans-pricing.yml
- type: RateLimits
  url: rate-limits/networkcalc-rate-limits.yml
- type: FinOps
  url: finops/networkcalc-finops.yml
- url: https://networkcalc.com/articles/
  type: Blog
- type: AgenticAccess
  url: agentic-access/networkcalc-agentic-access.yml
- type: DomainSecurity
  url: security/networkcalc-domain-security.yml
- type: Website
  url: https://networkcalc.com/
- type: Documentation
  url: https://networkcalc.com/api/docs
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

NetworkCalc API — frequently asked questions

Does NetworkCalc have an API?

Yes. APIs.io lists 5 APIs from NetworkCalc, including NetworkCalc Binary Converter API, NetworkCalc DNS API and NetworkCalc Encoder API, and 2 more.

Is there an OpenAPI specification for the NetworkCalc API?

Yes. APIs.io indexes 5 OpenAPI specifications for NetworkCalc, each linked for download from this page.

How much does the NetworkCalc API cost?

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

Is the NetworkCalc API ready for AI agents?

NetworkCalc has a Kin Score of 22.7 out of 100 (emerging) and an Agent Readiness score of 19.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
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