WhatIsMyDns App

A DNS App for Technitium DNS Server that returns the client's IP address for A, AAAA, and TXT queries.

Overview

• APP-record driven – no root-level dnsApp.config
• Client reflection – answers with the client's source IP
• Protocol-aware – returns A for IPv4 clients and AAAA for IPv6 clients

Integration / extension points

• Implements: IDnsApplication, IDnsAppRecordRequestHandler
• Runs as an APP-record request handler.

Configuration

dnsApp.config is not used by this app.

The app is configured by creating an APP record at the desired name. The APP record data itself is not used.

Runtime behavior

• A queries return the client's IPv4 address when the client connects over IPv4.
• AAAA queries return the client's IPv6 address when the client connects over IPv6.
• TXT queries return the client's IP address as text.
• Other query types are not answered by this app.

Risks / operational notes

• Reveals client IP information to the queried name.
• IPv4 and IPv6 clients receive different record types.
• Use carefully on internal or privacy-sensitive networks.

Troubleshooting

• Confirm the APP record exists at the intended name.
• Confirm the query type is A, AAAA, or TXT.