Domain Info

A full-stack DNS record lookup tool, just enter a domain name and inspect A, MX, NS, TXT, and CNAME records in a clean dark-themed UI.

Features

• Resolve A, MX (with priority), NS, TXT, and CNAME records
• Collapsible accordion UI with record counts
• One-click copy to clipboard for any record type
• Loading spinner and descriptive error states
• Full TypeScript, strict linting, Zod validation

Tech Stack

• Frontend: React, Vite, TypeScript
• Backend: Hono, Node.js, TypeScript
• Validation: Zod

Quick Start

# 1. Start the backend (port 6633)
cd server
npm install
npm run dev

# 2. Start the frontend (port 5173, proxies /api to backend)
cd client
npm install
npm run dev

Open http://localhost:5173, type a domain, and click Lookup.

API

GET /api/lookup?domain=example.com

Response:

{
  "domain": "example.com",
  "a": ["93.184.216.34"],
  "mx": [{ "exchange": "mail.example.com", "priority": 10 }],
  "ns": ["ns1.example.com"],
  "txt": [["v=spf1 ..."]],
  "cname": [],
  "error": null
}

GET /health returns { "isOk": true }.

Scripts

Server

Command	Description
npm run dev	Start dev server with hot reload
npm run build	Compile TypeScript to dist/
npm run start	Run compiled output
npm run lint	Run ESLint

Client

Command	Description
npm run dev	Start Vite dev server
npm run build	Type-check and build for production
npm run preview	Preview production build
npm run lint	Run ESLint