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 APIs 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.

NetworkCalc’s developer surface includes documentation and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub

19.0/100 emerging ▬ flat Agent 20/100 agent aware Front door AI 2/6 trace Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessFreemium

1 APIs

Networking DNS SecuritySubnettingDomains Calculator

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 19.0/100 · emerging

Contract Quality 9.2 / 21

Developer Ergonomics 1.6 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.9 / 11

Contract Governance 0.0 / 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

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/.

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 github.com/api-evangelist/networkcalc: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

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 6

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

API Collection

OPEN COLLECTION

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

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

FinOps 1

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

Networkcalc Finops

FINOPS

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

Company 1

The organization behind the API

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: medium
  source:
  - plans
  generated: '2026-07-22'
  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: '2026-05-19'
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: 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

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