I want to write a batch file to get the DNS numbers behind a router.

[techs]

I do a lot of internet troubleshooting and would like to put a simple batch file in customers computers that will let me see their DNS numbers when they are using a router.
I currently do this from a command prompt for Comast:

nslookup
set type=ns
comcast.net

It's been years since I wrote a batch file and so I just put these lines in notepad and labeled it dns.bat

However, this just runs the first line, nslookup.
Is there a command that will cause each line to run after Windows has performed the line above?

Or, is there an easier way to do what I want to do?

Thanks in advance!

 

[jebuchanan]

NSLookup itself pulls up the first server IP of the two servers I have listed.
Would it not be easier to simply open Network and Sharing Center, click Change Adapter Settings, right click on the Local Area Connection and select Properties, select IPv4, click properties?
Note I am using servers I manually entered in.

 

[HammerHead]

Set Command

The set command is use to enter a value for a variable. There is no defined variable for "type" that I am aware of. The same goes for your third command listed in your post. Probably that is the problem.

 

[techs]

NSLookup itself pulls up the first server IP of the two servers I have listed.
Would it not be easier to simply open Network and Sharing Center, click Change Adapter Settings, right click on the Local Area Connection and select Properties, select IPv4, click properties?
Note I am using servers I manually entered in.

It just gives me the ip of the router.
And in Adapter Settings I can't see the DNS numbers using DHCP.

 

[techs]

The set command is use to enter a value for a variable. There is no defined variable for "type" that I am aware of. The same goes for your third command listed in your post. Probably that is the problem.

I see.

Any ideas on how to automate the whole procedure?

 

[xarden]

The set command is use to enter a value for a variable. There is no defined variable for "type" that I am aware of. The same goes for your third command listed in your post. Probably that is the problem.

I see.

Any ideas on how to automate the whole procedure?

@Hammerhead, using the 'set' command will create a variable with the value and stores it in volatile memory for the current console session. As soon as you close the console, the variable is cleared and forgotten

@techs, try the command:
nslookup -type=ns comcast.net

For me, it returned:

Server:  [I]xxxxxxx[/I].aut.ac.nz
Address:  156.62.8.1

Non-authoritative answer:
comcast.net     nameserver = dns101.comcast.net
comcast.net     nameserver = dns103.comcast.net
comcast.net     nameserver = dns102.comcast.net
comcast.net     nameserver = dns105.comcast.net
comcast.net     nameserver = dns104.comcast.net

dns104.comcast.net      internet address = 68.87.68.244
dns104.comcast.net      AAAA IPv6 address = 2001:558:100a:5:68:87:68:244
dns101.comcast.net      internet address = 68.87.29.164
dns101.comcast.net      AAAA IPv6 address = 2001:558:1002:a:68:87:29:164
dns105.comcast.net      internet address = 68.87.72.244
dns105.comcast.net      AAAA IPv6 address = 2001:558:100e:5:68:87:72:244
dns103.comcast.net      internet address = 68.87.76.228
dns103.comcast.net      AAAA IPv6 address = 2001:558:1014:c:68:87:76:228
dns102.comcast.net      internet address = 68.87.85.132
dns102.comcast.net      AAAA IPv6 address = 2001:558:1004:7:68:87:85:132

 

[HammerHead]

Good

Xarden:

Thanks for straightening me out.

 

[xarden]

No worries.
Furthermore, the 'setx' command does the same but stores it as a system environment variable. Which you can use in different sessions, or after reboots.
Just be careful that you dont overwrite an existing one, like 'path' for instance.


@Techs,
let us know how that goes for you.

 

[techs]

No worries.
Furthermore, the 'setx' command does the same but stores it as a system environment variable. Which you can use in different sessions, or after reboots.
Just be careful that you dont overwrite an existing one, like 'path' for instance.


@Techs,
let us know how that goes for you.

Just back from vacation.
I will test and let you know.
thanks!

 

[Ztruker]

I use OpenDNS and doing the following:

ipconfig /all | find "DNS Servers"

returns this:

DNS Servers . . . . . . . . . . . : 208.67.222.222
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
DNS Servers . . . . . . . . . . . : 208.67.222.222

It shows both the IPV4 and IPV6 DNS servers available to me.

 

[techs]

Well, it doesn't seem to do what I want to do.
However, I would like to thank ALL of you for your interest and help.

Cheers.

 

[Ztruker]

You said you wanted an easy/automated way to get the DNS server addresses.

What exactly do you want. This is fun stuff so ask away

If you put this ina batch (.bat) file you can place a link to it on the Desktop:

cmd /k ipconfig /all | find "DNS Servers"

It will open a Command Prompt window with the result displayed for you.

 

[techs]

You said you wanted an easy/automated way to get the DNS server addresses.

What exactly do you want. This is fun stuff so ask away

If you put this ina batch (.bat) file you can place a link to it on the Desktop:

cmd /k ipconfig /all | find "DNS Servers"

It will open a Command Prompt window with the result displayed for you.

That gives me the ip of the router, not the dns servers the router is using.

Yah, this is something I just wanted to play around with.

A few years ago I found it simple to just place a batch file on all my client computers, which basically did a release, renew for ipconfig. Saved some time with explaining to customers how to open a command prompt, which was the backslash key, etc.

I thought maybe I could do something with this.

 

[Ztruker]

I looked at this some more and I don't find any way to get the DNS addresses. I did find a way using wget to get your external IP address but no DNS.

I started with this info: Command line app needed to find external ip