microsoft-windows-server-dns.exe-2500-udp-ports
as a patch to the Kaminsky vulnerability MS reserves 2500 random ports... hmmm... 953230 http://www.microsoft.com/technet/security/Bulletin/MS08-037.mspx
dnscmd /Info /SocketPoolSize
dnscmd /Config /SocketPoolSize
net stop dns
net start dns
net stat -an will show you the nice new (shorter) configuration