DNS Propagation Checker

⚠️ This repository has been discontinued. Feel free to take inspiration from this project to build something awesome. ❤️

DNS Propagation Checker is a web application that allows you to check multiple DNS records against one or many Name Servers (NS). This can be useful before changing Name Servers for a Internet Domain from one hosting to another, by validating that a DNS zone resolves correctly on all resolvers before proceeding with the migration.

Features

• Check multiple DNS records against multiple resolvers
• Persistant configuration of records, servers and settings based of url
• Color indication of matching DNS records, even if they come back in different order.

You can run it locally using docker, docker-compose, node or try out the online demo.

Build Status

Branch	Status
master

Start

Start the application using either docker, docker-compose or node below. Regardless of choice, the application will by default listen on http://localhost:3000.

Docker

Run jeliasson/dns-propagation-checker which is build on Docker Hub.

docker run -it -p 3000:3000 jeliasson/dns-propagation-checker

Docker - Build & Run

Build and run a docker container

# Clone repo
git clone https://github.com/jeliasson/dns-propagation-checker.git

# Enter created directory
cd dns-propagation-checker

# Build
docker built -t dns-propagation-checker .

# Start
docker run -it -p 3000:3000 dns-propagation-checker

Docker Compose

Build and run a docker container using docker-compose.

# Clone repo
git clone https://github.com/jeliasson/dns-propagation-checker.git

# Enter created directory
cd dns-propagation-checker

# Start
docker-compose up

Node

Make sure that you have the Linux utility dig installed. See Under the hood for more details.

# Clone repo
git clone https://github.com/jeliasson/dns-propagation-checker.git

# Enter created directory
cd dns-propagation-checker

# Install yarn deps
yarn install

# Start
yarn start

Contribute

Feel free to create a new project and let me know about it. Might join in 😃

Under the hood

First off, it’s not pretty and was done in a hurry. It’s using the Linux utitlity dig for querying DNS servers, and using Vue and Nuxt to serve the front- and backend requests and shelljs to interact with dig.

The client side application can be found in /pages/index.vue. It’s saving the state/settings on client side by changing the url, containing the url parameter settings - which is essentially a base64 encoded object holding records and servers. For now, and just because we can, it’s using this base64 object when querying the /api/query endpoint.

On the server side of things in /api/routes/query.js, we take in posted data and making sure it’s not containing any nasty user input. We construct a dig command, run it, check if there any difference between earlier resolves on that record, and finally respond with a JSON object.

Requests to /api/query is being rate limited to 10 requests over 60 seconds.

Todos

• Add maximum of servers and records that can be queries on a single run
• Enable/Disable server and record (server side processing)
• Prettier interface

Get started

Fork the project, clone it, and make awesome updates. Send your Pull Request to origin 😃

# Clone repo
git clone https://github.com/jeliasson/dns-propagation-checker.git

# Enter created directory
cd dns-propagation-checker

# Enter source directory
cd src

# Install yarn deps
yarn install

# Start
yarn dev            # Listening on localhost:3000 with hot reload

Licence

MIT