10.0.0.x or 192.168.0.x non-routable network - which should I use?

Posted on 2004-10-12
Last Modified: 2007-12-19
I am setting up a 2003 server network at school.  Is there some reason why I should be using the 192.168... range instead of the 10.0.0.x range?  When the DHCP server suddenly stops functioning, then the 192.168.x.x range is automatically adopted by each PC. Understood.  Is this the reason why I see so little reference to and use of the 10.0.0.x range?  
Question by:Alistair7
  • 4
  • 2
LVL 70

Accepted Solution

Chris Dent earned 500 total points
ID: 12286176

No reason you should use one over the other except for the range of the scope. If you get the 192 Address on a PC have you tried seeing where it is getting the address (possibly a Router / Firewall)? If you run:

ipconfig /all

At the command prompt it will tell you whether or not it is using DHCP, and the Server Address if it is.

Just for reference: is a Class A Scope, with all addresses between and usable (scope includes Network and Broadcast Address). is a Class B Scope, with all addresses between and usable (again including the Network and Broadcast Addresses). is a Class C Scope, with all addresses between and usable (one last time for those Network and Broadcast Addresses).

LVL 70

Expert Comment

by:Chris Dent
ID: 12286190
I keep forgetting to add things...

If no DHCP Server is present (and the Network Connection is active) then an Address from the Automatic Range is assigned:

This is a Class C Subnet (/16) with Addresses in the Range to

Author Comment

ID: 12295317
Is the automatically assigned 169.254 range also non routable?
Backup Your Microsoft Windows Server®

Backup all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

LVL 70

Expert Comment

by:Chris Dent
ID: 12295737
LVL 70

Expert Comment

by:Chris Dent
ID: 12295739
Although non-routable is a bad description, all IP ranges are routable, just some aren't used in the public IP space ;)

Author Comment

ID: 12300468

Featured Post

Zoho SalesIQ

Hassle-free live chat software re-imagined for business growth. 2 users, always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The HP utility "HP Lights-Out Online Configuration Utility for Windows Server 2003/2008" could be of great use when it comes to remotely configure a HP servers ILO WITHOUT rebooting the server. We would only need to create and run scripts using thi…
I guess it is not common knowledge to most Wintel engineers/administrators: If you have an SNMP-based monitoring system in your environment (and it's common to have SNMP or Syslog) it's reasonably easy to enable monitoring of the Windows Event logs,…
This Micro Tutorial will give you a basic overview how to record your screen with Microsoft Expression Encoder. This program is still free and open for the public to download. This will be demonstrated using Microsoft Expression Encoder 4.
Internet Business Fax to Email Made Easy - With  eFax Corporate (, you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, f…

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now