This page contains various tools that I have created myself for use in our work. Some tools available on the internet are great, but in my opinion, they are not always complete for certain purposes. I aim to develop my tools in such a way that they include everything we need to complete a certain task, in the easiest way possible and with functionality to export the information for future reference.
All tools have their own short link which is easy to remember as a shortcut. (jvapp.nl)
All of my created tools are open-source (MIT License) and the code can be found on my GitHub account.
DNS MEGAtool
DNS MEGAtool is a simple, efficient and overall great tool to check the configured records for your domain or bulk domains. It also checks some security options and has an Export function.
Password Generator
The Password generator is a great and fast tool to easily generate passwords. It also contains some options like the character sets and excluding similar characters.
Port Checker Tool
The Port Checker tool is a simple and easy tool to check if TCP ports are opened to the internet. This makes it a great troubleshooting tool or just testing your created firewall/DNAT rules.
Subnet Calculator
The Subnet Calculator is a great and efficient tool to calculate your IPv4 networks and to identify the network configuration based on a IP address and Subnet mask. It also has an Export function.
365 Records Generator
The 365 Records Generator is an easy tool to generate all DNS records needed to configure your domain in Microsoft 365 (ex. verification and SMTP DANE). They will derive from your domain and tenant name. The tool also has an Export function.
IP Lookup Tool
A simple tool to lookup IPv4 or IPv6 addresses to view some of it’s properties, like Internet Provider (ISP), Country, Location and more. The tool also has an Export function for your documentation.
365 Tenant Lookup
The 365 Tenant Lookup is a simple tool to search for Microsoft 365 tenants on their custom domain or .onmicrosoft (MOERA) domain to get the associated Tenant ID and location.
Registry to PowerShell
A simple and webbased tool to convert Registry files and keys to PowerShell scripts to use in Microsoft Intune, startup scripts and Active Directory Group Policies. You can also directly export REG files to PowerShell scripts.
HTML Color Picker
A simple and webbased tool to pick HTML colors and to look for HEX/RGB codes for your projects.
To learn more about my tools, GitHub and Azure Static Web Apps, check out this page: https://justinverstijnen.nl/upload-multiple-github-repositories-into-a-single-azure-static-web-app/