> ## Documentation Index
> Fetch the complete documentation index at: https://docs.periphery.exposed/llms.txt
> Use this file to discover all available pages before exploring further.

# Domain search

> Find indexed apps that match an organisation's domain through hostnames, email addresses, and page mentions.

Typing a bare domain is the fastest way to find indexed apps that carry signals tied to an organisation. `acme.com`, `https://app.acme.com/login`, and `domain:acme.com` all run the same search.

> [!WARNING]
>
> A domain match is a search signal, not attribution and not proof that the domain owner operates the app. Public contact addresses, copied text, examples, and third-party integrations can all create legitimate matches.
>
> Periphery performs attribution only as part of its **[managed service](https://docs.periphery.exposed/plans.md#managed-service-and-custom-terms)**, where Periphery investigates matched apps and attributes them to their owners.

## What matches

An app matches a domain when any one of three signals matches:

1. **The hostname starts with the domain.** Provider hostnames usually fold a custom domain into their slug, so `acme-com.vercel.app` and `acme-com-dashboard.vercel.app` match `acme.com`, and so does the host `acme.com` itself. The domain has to open the hostname and end at a `.` or `-`: `acme-company.vercel.app` and `app.acme.com` don't match through the hostname, though they still match through the two signals below.
2. **An email address on the page is on the domain.** A contact address such as `security@acme.com` creates a domain match.
3. **The page text mentions the domain.**

## How the domain is read

* Schemes, subdomains, paths, ports, and credentials are stripped: `https://user@app.acme.com:8443/x?y` searches `acme.com`.
* The suffix must be a real public suffix. `acme.co.uk` searches `acme.co.uk`; `config.json` and `v2.1` are not domains and are searched as free text.
* Several domains must all match. `acme.com domain:acme.io` and `domain:acme.com,acme.io` both return only apps matching both domains. This is the one filter whose comma-separated values AND together rather than OR.

## When nothing matches

If a domain search returns no results, the console offers the domain's name as a keyword search: `acme.com` becomes `acme`. That matches titles and page text that mention the name without the suffix, which catches apps that spell the organisation out but never link to its domain.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.