Friday, September 04, 2009

Identifying Your Local DNS Server

DNS, which lets you translate a host name or URL into an IP address, is a key process in Internet use. One of the first questions that you need to ask yourself, when you have an Internet problem that may involve DNS, is
What DNS servers are you using?
and many times, this question can be answered by direct observation of the IP configuration of your computer.

If your computer runs Windows XP, or one of its direct peers (Windows 2000, Windows Vista, Windows 7), open a command window, and type
ipconfig /all
Here's an example of what I would see, from my computer.

Windows IP Configuration
Host Name . . . . . . . . . . . . : PChuck1
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : pchuck.net
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com EtherLink XL 10/100 PCI For Complete PC Management NIC (3C905C-TX)
Physical Address. . . . . . . . . : 00-04-76-D7-C5-6A
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.50
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.11
192.168.1.33
Lease Obtained. . . . . . . . . . : Wednesday, April 16, 2003 11:19:12
Lease Expires . . . . . . . . . . : Wednesday, April 23, 2003 11:19:12

In this example, DNS on my computer is provided by "192.168.1.11" and "192.168.1.33". What you see on your IPConfig log will probably be different, and may be a key clue in diagnosing the problem which you are experiencing.

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1 comment:

Michael said...

This blogs gives an clear idea about the identifying the local DNS server ip address. But the procedure is not clear. I also found one method to get the ip address from ip details for isp provider ip address.