Active Directory – Questions About IPv4Address

Fire up your trusty ADSIEdit (adsiedit.msc, it's in the support tools) and connect to the Configuration context of your domain, then "Partitions"; there you should have five entries (assuming the domain name is "domain.com"):

• CN= (partition name: DC=ForestDnsZones,DC=domain,DC=com)
• CN= (partition name: DC=DomainDnsZones,DC=domain,DC=com)
• CN=Enterprise Configuration (partition name: CN=Configuration,DC=domain,DC=com)
• CN=Enterprise Schema (partition name: CN=Schema,CN=Configuration,DC=domain,DC=com)
• CN=DOMAIN (partition name: DC=domain,DC=com)

Anything else is useless, unless you explicitly created a directory partition for it; in a standard AD setup there isn't anything else there. If one of these entries is missing, you're in troubles.

You should also find your spurious partition there; it should be safe to delete it.

Just to be on the safe side, it would be a good idea to take a proper AD backup (i.e. a DC's system state) before deleting it.

Based on some tinkering it looks like the two attributes that would be important to you that change when you rename a user object are: the "cn" attribute and the "name" attribute. Both of these attributes reflect the value entered in the Full Name field when renaming a user. You could extract either of those to accomplish your goal, I suppose.