---
sourceDocument: Brazil IT Operations Management
sourceDocumentLink: https://www.servicenow.com/docs/r/it-operations-management

 Release :

    - brazil

ft:locale :

    - en-US

ft:publication_title :

    - Brazil IT Operations Management

ft:clusterId :

    - itom

bundleId :

    - itom

workflow :

    - Technology


---

# Discovering DNS names using push-based discovery

# Discovering DNS names using push-based discovery {#ariaid-title1}

Release version: Brazil  
Updated September 10, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
CMDB owners need CIs to contain all domain system names (DNS) associated with their system. Starting in Agent Client Collector for Visibility Content (ACC-VC) version 2.3.0, ACC-VC can discover DNS name lists for Windows and Linux CIs.

When discovering DNS names associated with systems, the following occurs.

* network_adapters.rb is used to populate the DNS name for all the IP addresses using OSquery. (There is no limit.)
* Nslookupcommand is used to get the DNS name for all IP addresses.  
  Note:  
  Nslookup must be configured on the target.

{#acc-v-discover-dns-names__ul_gty_lgt_25b}

This creates a relationship of Owns::Owned by between the CI and the DNS names.

This information is then populated into the \[cmdb_ci_dns_name\] table.