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Example.com and the Four Safe Domains: The Internet’s Documentation Placeholder episode artwork

Nov 9, 2025 4 min

Example.com and the Four Safe Domains: The Internet’s Documentation Placeholder

from Intellectually Curious Hosted by Mike Breault

We explore why the four reserved domains—example.com, example.net, example.org, and example.edu—exist as safe placeholders for documentation. Who owns and runs them (IANA and ICANN) and how RFC 2606 codified their status, plus why DNSSEC is used and why you must not rely on them in production. A quick tour of history, rules, and best practices for using sample domains in code. Note: This podcast was AI-generated, and sometimes AI can make mistakes. Please double-check any critical information. Sponsored by Embersilk LLC

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Example.com and the Four Safe Domains: The Internet’s Documentation Placeholder

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