NetworkCalc website screenshot

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
22.1/100 emerging ▬ flat Agent 25/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessFreemium
5 APIs
NetworkingDNSSecuritySubnettingDomainsCalculator

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 22.1/100 · emerging
Contract Quality 11.7 / 25
Developer Ergonomics 1.9 / 20
Access Clarity 0.0 / 20
Operational Transparency 1.0 / 13
Contract Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 25/100 · 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. 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. Want it done for you? Prioritized profiling — $2,500 →

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)

apis.yml Raw ↑ 
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
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: Consumer
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