Ops Tool Network
Field notes Utility before traffic

Small tools for consequential technical decisions.

A growing collection of focused utilities for network planning, DNS, cloud cost, and web operations—built to show their working and respect the data you enter.

Start with the job

Find the right workbench

Choose the outcome you need. The status list below says what is actually available.

01Plan an IPv4 networkCIDR Workbench02Diagnose DNS recordsDNS Alignment Lab03Estimate cloud transfer costEgress Cost Lab04Review TLS, domains, or headersSee the security utilities

Build sequence

What is on the bench

Read full status notes
  1. 01

    CIDR Workbench

    Local-first IPv4 subnet calculation and explanation.

    Live
  2. 02

    DNS Alignment Lab

    DNS and email-authentication reasoning with clear remediation.

    Planned
  3. 03

    Egress Cost Lab

    Dated, source-backed comparisons for overlooked cloud network costs.

    Planned
  4. 04

    TLS Chain Check

    Certificate and chain explanation before remote protocol testing.

    Planned
  5. 05

    Domain Ops Check

    Registration, DNS, certificate, and redirect evidence in one timeline.

    Planned
  6. 06

    Header Hardening

    Security-header remediation and configuration generation.

    Planned

CIDR Workbench is live. Planned names remain working names, not availability claims or launch promises.

Publishing standard

Useful. Legible. Restrained.

01

Show the working

Calculations include assumptions, edge cases, and source material.

02

Keep local work local

Deterministic inputs stay in the browser and out of analytics events.

03

Earn the launch

Each utility passes correctness, accessibility, privacy, and security gates.