# Universal Site Number (USN)

Source: https://sites.veevavault.help/gr/sitevault/getting-started/usn/

The Universal Site Number (USN) is a unique identifier created and assigned by Veeva to research sites (_example: US-KS-#####_). This includes, but is not limited to, each department or distinct operational research unit within a hospital or academic medical center, each individual site within a site network, and any independent research site.

## USN Purpose

- Site Connect users can [save site addresses](/gr/siteconnect/profile/saved-addr-add/) to the USN’s registry for easy access and use on future studies.
- Study Startup users can store answers to standard and reusable feasibility survey questions.
- The USN facilitates the connectivity between Site Connect and SiteVault for document exchange and additional tasks. For more information, see [Connecting Site Connect to SiteVault](/gr/sitevault/getting-started/site-connect/).

## Receive a USN Assignment

Sites can receive a USN by:

- A self-service request during a Study Startup feasibility survey
- Entering a site address in Site Connect
- Automatic assignment when signing up for SiteVault.

## Find your USN

### SiteVault

The USN is displayed in the top right of every SiteVault page.

[![SV USN](/gr/uploads/sitevault/images/help/sv-usn.png) ](/gr/uploads/sitevault/images/help/sv-usn.png)

### Site Connect

The USN is located on the **Site Settings \> Settings Connected Site** page.

[![SC USN](/gr/uploads/siteconnect/images/help/sc-usn-find.png) ](/gr/uploads/siteconnect/images/help/sc-usn-find.png)