DevOps & Infrastructure

DNS Record Management

Configure and manage DNS records including A, AAAA, CNAME, MX, TXT, and CAA records for domain routing, email, and verification.

Claude Code Codex Cursor Gemini CLI

Overview

DNS is the foundation of all internet services, yet misconfigured DNS records are one of the most common causes of downtime. AI agents can help you understand DNS record types, generate the correct records for your use case, troubleshoot propagation issues, and implement best practices like CAA records for certificate authority authorization and proper SPF/DKIM/DMARC for email deliverability.

AI coding agents can manage DNS across multiple providers including Cloudflare, Route53, DigitalOcean, and Google Cloud DNS using their respective CLIs. Your agent can create A records pointing to your server, set up CNAME records for subdomains, configure MX records for email routing, add TXT records for domain verification, and implement CAA records to restrict which CAs can issue certificates for your domain.

Email-related DNS is where AI agents provide the most value. Setting up SPF, DKIM, and DMARC records correctly is notoriously confusing, with specific syntax requirements that are easy to get wrong. Your AI agent can generate these records, validate them with dig commands, and troubleshoot delivery issues caused by DNS misconfigurations.

Who Is This For?

Developers configuring DNS for new domain deployments
DevOps engineers setting up SPF, DKIM, and DMARC for email deliverability
Teams troubleshooting DNS propagation and resolution issues
System administrators managing DNS across multiple providers

Installation

Setup for Claude Code

For Cloudflare: npm install -g wrangler && wrangler login
For AWS: brew install awscli
Claude Code manages DNS records via provider CLIs

Configuration

# Cloudflare DNS via wrangler
wrangler dns-records create example.com --type A --name @ --content 159.223.145.181 --ttl 300
wrangler dns-records create example.com --type CNAME --name www --content example.com --ttl 300

# Verify DNS propagation
dig +short example.com A
dig +short example.com MX
dig +short _dmarc.example.com TXT