dns-tools

Diagnose DNS configuration issues with dig, nslookup, and host queries.

7|Updated Mar 5, 2026

Search Tags:#diagnostics #dns #host #dnssec #dig #nslookup #zone-transfer

Ready to run

npx skills add https://github.com/rloisell/rl-agents-n-skills --skill dns-tools

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: dns-tools
Source: https://github.com/rloisell/rl-agents-n-skills/tree/main/dns-tools
Command: npx skills add https://github.com/rloisell/rl-agents-n-skills --skill dns-tools

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

DNS configuration issues often block services, hinder mail delivery, and obscure propagation status. This tool provides fast, repeatable DNS queries and diagnostics to identify misconfigurations, delegation problems, and DNSSEC issues.

Core Features & Use Cases

Query A/AAAA/MX/TXT/CNAME/NS/SOA records using dig, nslookup, and host.
Validate delegation paths, perform reverse lookups, and verify DNSSEC signatures.
Use cases include domain onboarding, email delivery troubleshooting, and zone-transfer testing.

Quick Start

Run a zone diagnostic on example.com to verify records and propagation status.

Frequently Asked Questions about dns-tools

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I troubleshoot DNS configuration issues using dig and nslookup?▼

Troubleshoot DNS configuration issues by querying A, AAAA, MX, and TXT records with dig, nslookup, and host. This identifies misconfigurations, delegation problems, and DNSSEC issues that block services or hinder mail delivery.

How can I verify SPF, DKIM, and DMARC records for email delivery troubleshooting?▼

Verify SPF, DKIM, and DMARC records for email delivery troubleshooting by querying the domain's TXT records with dig or nslookup. This quickly reveals misconfigurations causing email rejection or propagation delays.

What is the best way to check DNSSEC signatures and delegation paths for a domain?▼

Check DNSSEC signatures and delegation paths by running guided diagnostic commands that query the domain's SOA and NS records. This validates the delegation hierarchy and verifies DNSSEC signatures to isolate propagation failures.

Can I perform a DNS zone-transfer test and reverse lookups with these diagnostic commands?▼

Perform basic DNS zone-transfer testing and reverse lookups using supported dig and host commands. These guided queries map IP addresses back to hostnames and check zone configuration to identify unauthorized or misconfigured transfers.

Why does my domain onboarding fail due to undetected DNS record misconfigurations?▼

Domain onboarding fails when DNS record misconfigurations go undetected across CNAME, NS, or SOA records. Running a zone diagnostic validates record propagation status and delegation paths to pinpoint the blocking errors.

Are there limitations to running basic zone-transfer checks for DNS diagnostics?▼

Basic zone-transfer checks for DNS diagnostics are limited to configurations where the querying server is explicitly permitted. If the zone's NS records restrict transfers, the diagnostic commands will fail to retrieve the full zone data.