All sites and initiative sites created with ArcGIS Hub are published with a web address that consists of the organization short name, the site name, and a default subdomain provided by Hub. You can update your site's name in the default URL or add a custom domain that you own or one purchased by your organization.

A domain name is part of your site's web address and is a human-friendly way to identify your site's Internet Protocol (IP) address. An IP address is a series of unique characters that identifies each computer (personal device or server). This allows a worldwide network of computers to ask each other for information, such as directions to your site. Your device uses a domain name system (DNS) to locate your site's IP address whenever someone opens your site in a web browser.


Think of a domain as the name of a contact and the IP address as the contact’s phone number or home address. Similar to a contact list, the internet uses a DNS to look up the site’s IP address.

Default domains for sites

All sites created with ArcGIS Hub are hosted on the default domain on Site managers are required to select either the (default) or subdomain. The subdomain is then combined with your ArcGIS Online organization short name and, initially, your site name to produce your site URL.

For example, if your organization's short name is mycompany and you use the default subdomain of with your site named data, then your site's URL would be

Once created, your site URL is no longer connected to your site item name, which allows you to change the site name while keeping the domain the same and vice versa.


Changing the organization's short name after you have created sites or other ArcGIS applications is an important consideration (learn more about changing organization short name). Unlike other ArcGIS applications, you cannot update a site item's application URL to resolve any issues after an organization short name change. Instead, you will need to contact Esri Support Services to have the site's registered domain updated.

Update a site's default URL and custom domains

You can update your site name in its URL or switch the subdomain from the default to See Update a site's default URL for additional information. To apply a custom domain to your site, you must update your domain name service record and add the full domain in ArcGIS Hub to finish the setup. For complete steps, see Use a custom domain.

Proxy traffic and certificates

You cannot run traffic through a proxy server. Custom domain configurations will fail validation when the domain is added to your ArcGIS Hub site.

You cannot use your own HTTPS certificate. For security reasons, ArcGIS Hub requests short-lived HTTPS certificates for sites on the platform on your behalf. The Certificate authority (CA) that Hub uses is Let's Encrypt CA.