D-Root IPv4 Change - Do You Have the New One?

by Ryan 7. January 2013 19:48

D-Root changed its IPv4 address back on January 3rd.  The old one is still up for now, but will be phased out in the future.  The old IPv4 address is  The new address is (d.root-servers.net IPv6 address is not changing.)

Today, someone asked me how to figure out, on the command-line, whether their Windows DNS server had the new updated d-root IP address or not.

After about 10 minutes of fiddling, here is what I came up with:

PS C:\> If($(Get-WmiObject -Namespace root\MicrosoftDNS MicrosoftDNS_ResourceRecord | ? DomainName -Match "root-servers.net" | ? OwnerName -Match "d.root-servers.net." | ? ContainerName -Match "..RootHints").IPAddress -ne "") { Write-Host "YOUR D-ROOT IS OLD!" }

If your DNS server is still configured with the old root hints address for d-root, the command will notify you.

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About Me

Ryan Ries
Texas, USA
Systems Engineer

I am a systems engineer with a focus on Microsoft tech, but I can run with pretty much any system that uses electricity.  I'm all about getting closer to the cutting edge of technology while using the right tool for the job.

This blog is about exploring IT and documenting the journey.

Blog Posts (or Vids) You Must Read (or See):

Pushing the Limits of Windows by Mark Russinovich
Mysteries of Windows Memory Management by Mark Russinovich
Accelerating Your IT Career by Ned Pyle
Post-Graduate AD Studies by Ned Pyle
MCM: Active Directory Series by PFE Platforms Team
Encodings And Character Sets by David C. Zentgraf
Active Directory Maximum Limits by Microsoft
How Kerberos Works in AD by Microsoft
How Active Directory Replication Topology Works by Microsoft
Hardcore Debugging by Andrew Richards
The NIST Definition of Cloud by NIST

MCITP: Enterprise Administrator


Profile for Ryan Ries at Server Fault, Q&A for system administrators


GitHub: github.com/ryanries


I do not discuss my employers on this blog and all opinions expressed are mine and do not reflect the opinions of my employers.