In the windows environment there is no such “DEV” designator  
   
The designators for Windows are:

1. Production          ad.cbp.dhs.gov, dmz.cbp.dhs.gov, app.ad.cbp.dhs.gov, atsprod.ad.cbp.dhs.gov
2. SAT                       sat.cbp.dhs.gov, atsdev.cbp.dhs.gov

   
In the Production space:  
There is a temporary holding space until the server is Production ready. (Pre-Production OU)  
Every computer is expected to move from Pre-Production to Production.  
   
Monitoring is setup automatically on every computer.  Only Production computers actionable alerts are forwarded to the TOC  
DNS registration must reflect the domain membership.