register

Grab your own sweet-looking '.is-a.dev' subdomain.

16 articles

What Is the Timestamp TXT Record in is-a.dev? Purpose and Usage

Discover the purpose of the timestamp TXT record in is-a.dev. Learn how this machine-readable marker helps track zone refresh times and ensures data accuracy.

deep-dive

Mar 9, 2026

How is-a.dev Enforces Subdomain Naming Conventions: Multi-Layer Validation Explained

Discover how is-a.dev enforces subdomain naming conventions with multi-layer validation including JSON block lists CI filename checks and DNS record generation Learn about their robust security.

deep-dive

Mar 9, 2026

What CDN or DNS Provider Does is-a.dev Use?

Discover the CDN and DNS provider used by is-a.dev. Learn how Cloudflare powers their authoritative DNS hosting and CDN capabilities through DNSControl.

how-to-guide

Mar 9, 2026

How to Run Tests for is-a.dev Domain Configurations: AVA Test Suite Guide

Execute the AVA test suite for is-a.dev domain configurations by running npm test from the repository root. Validate subdomain setups efficiently.

how-to-guide

Mar 9, 2026

What Is internal.json in is-a.dev? Purpose and Infrastructure Protection

Discover the purpose of internal.json in is-a.dev. Learn how this file protects infrastructure by managing internal subdomains and blocking user registration for system-managed names.

internals

Mar 9, 2026

How is-a.dev Handles Special DNS Record Types: CAA, DS, SRV, TLSA, and URL

Discover how is-a.dev manages special DNS record types like CAA, DS, SRV, TLSA, and URL using JSON config and Cloudflare API. Learn about schema validation.

deep-dive

Mar 9, 2026

How Automated Tests Validate is-a.dev Domain Configurations

Learn how automated tests validate is-a.dev domain configurations for syntax, hierarchy, ownership, and policy compliance using the AVA test framework in the is-a-dev register repository.

how-to-guide

Mar 9, 2026

Reserved Domains in is-a.dev: How the Registry Protects Critical Subdomains

Discover reserved domains in is-a.dev. Learn how critical subdomains like admin api and www are protected and automatically configured to prevent user registration.

deep-dive

Mar 9, 2026

How is-a.dev Handles TXT Record Strings: DNS Configuration Logic Explained

Explore how is-a.dev manages TXT record strings for DNS configuration. Learn about its logic for single values, arrays, and timestamp injection.

internals

Mar 9, 2026

MX Record Format in is-a.dev: Configuring Mail Exchange Records

Learn the MX record format in is-a.dev. Explore simple hostname arrays or objects with explicit target and priority values for efficient mail exchange configuration.

api-reference

Mar 9, 2026

How CNAME Records Are Handled for Apex Domains in is-a.dev

Discover how is-a.dev expertly manages CNAME records for apex domains. Learn about ALIAS record conversion and root domain configuration.

internals

Mar 9, 2026

How is-a.dev Handles Cloudflare Proxying: DNS-as-Code Implementation

Discover how is-a.dev manages Cloudflare proxying with DNS-as-Code. Learn about their `proxied` flag implementation for A, AAAA, and CNAME records and automated validation.

internals

Mar 9, 2026

Have a question about this repo?

These articles cover the highlights, but your codebase questions are specific. Give your agent direct access to the source. Share this with your agent to get started:

Share the following with your agent to get started:

curl -s "https://instagit.com/install.md"

Add to your MCP client configuration:

{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
}

Ask your agent:

"Use Instagit MCP to understand how is-a-dev/register works."

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