> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/cortex-cloud-posture-management/cloud-inventory-and-environment/asset-classes/external-surface-assets/domain-assets.md). # Domain assets The External Surface inventory includes all domains that Cortex Cloud has attributed to your organization and whether each domain has a recent resolution. Root domains and subdomains are displayed as separate entries in the inventory. However, if an organization owns a wildcard DNS entry, all subdomains of that wildcard that resolve to the same IP address are grouped under that one wildcard domain asset entry. If there are more than 1,000 subdomains, subdomains are collapsed under the parent domain. Cortex Cloud collects domains and DNS data from a combination of active and passive global collection techniques. For DNS scanning, Cortex Cloud sends a BIND version query as the payload. This approach still identifies DNS servers that are not BIND compliant as their response informs us of a DNS server’s existence. Click a row in the Domains table to open the details page for that domain. The information on this page is organized into the following tabs: * **Overview:** Summarizes key information about the domain, including Highlights like internet exposure, Properties like Asset ID, Provider, Asset Category, Account ID, and Tags, along with Attribution Evidence explaining why the asset belongs to your organization * **Vulnerabilities:** Displays Vulnerability Findings and Packages associated with the domain, including CVE IDs, CVSS scores, and EPSS scores * **Compliance:** Displays the Overall Compliance Score and Controls by Status for the domain * **Recently Observed:** Lists recently observed IPs associated with the domain, including the IP Address, Last Seen date, and Cloud Type * **Services & Websites:** Lists the services and websites running on the domain, including their Type, Status, Discovery Type, and Host --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://cortex-docs.paloaltonetworks.com/cortex-cloud-posture-management/cloud-inventory-and-environment/asset-classes/external-surface-assets/domain-assets.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.