# DNS troubleshooting (/networking--dns-debug)

/networking--dns-debug is a Claude Code skill in the Code section. Diagnoses why a domain fails to resolve or propagate by comparing resolvers and delegation, then proposes specific record changes to fix it.

- Web version: https://skills.sgomez.dev/en/s/networking--dns-debug
- Section: [Code](https://skills.sgomez.dev/en/code.md)
- Author: Santiago Gómez de la Torre
- License: MIT
- Source: https://github.com/sgomez-dev/claude-skills/blob/main/skills/networking/dns-debug.md
- Updated 2 Apr 2026

## How to ask for it

- `/networking--dns-debug my domain hasn't resolved since yesterday`
- `/networking--dns-debug check why email isn't arriving, I suspect the MX records`
- `/networking--dns-debug has my DNS change propagated yet?`

## Install

macOS · Linux:

```
curl -fsSL https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.sh | bash
```

Windows:

```
irm https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.ps1 | iex
```

Claude Code plugin:

```
/plugin marketplace add sgomez-dev/claude-skills
/plugin install networking-skills@claude-skills-collection
```

## Permissions

- Reads: `**/*`
- Writes: —
- Runs: `dig`, `nslookup`, `host`, `curl`
- Network: Yes
- Destructive: No

## Author's description

Diagnose and troubleshoot DNS resolution and propagation issues

- [How we review this](https://skills.sgomez.dev/en/methodology.md)