Placeholder Hostname Generator

Generates a placeholder hostname on the IANA/RFC 2606-reserved "example.com" domain — for filling a network config template, an infrastructure diagram or a UI mockup that needs a domain without pointing at a real one.

Your result will appear here.

What this generator does

Produces a hostname under example.com for filling infrastructure diagrams, inventory tables and configuration examples. The shape is always one of ten short words, a number from 1 to 99 and the reserved domain, so 990 different names are possible.

How to use this tool

Press generate for a hostname.
Generate again for another one.

Worked examples

Format: ember7.example.com

Common use cases

Config/test data for network tools
Documentation examples
UI mockups needing a domain

How this generator works

One word is drawn from a list of ten and one number from 1 to 99, and the two are joined in front of .example.com. That keeps every name well inside the rules the DNS actually imposes: letters, digits and hyphens only, no leading or trailing hyphen, each label at most 63 characters and the whole name at most 253. Those limits are why hostnames look the way they do, and a generator that ignores them produces names that are refused at the point they matter.

Limitations and good to know

Example names for documentation and configuration mock-ups; nothing checks whether they resolve or are registered.
Hostnames are compared case-insensitively, so two names differing only in case are the same host.
Internationalised names exist and are encoded in punycode, which this deliberately avoids — the encoded form is where the confusable-character problems live.

This is randomly-generated example data, not a real, deliverable, resolvable or otherwise usable value — never use it as an actual production credential or contact detail.