When a new subnet is created in AD, no event is generated to show which site it's been added to in CA
With the default CA configuration, there are two events recorded in the ITAD event log when a subnet is created:
The 'object modified' event does capture the siteObject attribute value as a "to' value:
Old Value : <not set>
New Value : CN=Test1,CN=Sites,CN=Configuration,DC=mydomain,DC=tld
The following Enhancement Request has been opened for this issue:
Product Backlog Item 215113: As a CA Admin, I would like the "Subnet added" event to record the Site that was assigned to the Subnet when it was created