Download Nslookup Windows
Karla Pearcy
If you need to look up only a single piece of data, use noninteractive mode. For the first parameter, type the name or IP address of the computer that you want to look up. For the second parameter, type the name or IP address of a DNS name server. If you omit the second argument, nslookup uses the default DNS name server.
If you need to look up more than one piece of data, you can use interactive mode. Type a hyphen (-) for the first parameter and the name or IP address of a DNS name server for the second parameter. Or, omit both parameters and nslookup uses the default DNS name server. Following are some tips about working in interactive mode:
So, clutching at straws, what is the effect of the '-v' flag to nslookupwhich makes it (apparently) more successful at retrieving the response? I triedit originally thinking it might be 'verbose', but the output is not really verbose without -debug also, and it appears to have other effects.
NOTES: I've found out some more. It looks like zscaler is running on the Windows host and may well be interfering with the DNS requests. I mentioned in a comment that 'x.y.z.cloud' is not a name in our company's domain. However, it resolves (according to our local DNS server) to an IP address within the company network. From logs, zscalar appears to be classifying 'x.y.z.cloud' as an external 'isTunnel2Domain' and may be tunnelling the request somewhere un-useful. When 'nslookup -v x.y.z.cloud.' is used, it runs over TCP (thanks Dave!) and zscalar may not intercept it the same way.
As previously mentioned, the "-v" flag is not a valid option for the Windows nslookup command, so it's unlikely that it had any effect on the success or failure of your query.Based on your description, it seems like the issue may be related to DNS caching. Even after flushing the DNS cache with "ipconfig /flushdns", your system might still be using cached DNS records for the x.y.z.cloud domain, which can lead to the behavior you described where nslookup returns a different result than other applications.To completely clear the DNS cache, you can try the following steps:1.Open an elevated command prompt (i.e., run as Administrator).2.Type the following command: "net stop dnscache" (without the quotes) and press Enter.3.Wait a few seconds for the DNS Client service to stop.4.Type the following command: "net start dnscache" (without the quotes) and press Enter.5.Wait a few seconds for the DNS Client service to start.After completing these steps, try running nslookup and pinging the x.y.z.cloud domain again to see if the issue has been resolved. If the issue persists, there may be other factors at play that require further investigation.emphasized text
Below are several examples of how to use nslookup to check various DNS record types. By default, nslookup will use the local DNS server configured by your computer. See the last example to change Nslookup to use an external server.
In this guide, I walked through several examples of how to use the nslookup windows command. The nslookup command is a great tool to troubleshoot and check DNS records. A lot of times network issues are related to DNS and knowing how to quickly verify DNS is working correctly can be a huge time saver.
This command will run in PowerShell. On your Windows DNS server, you can enable DNS debug logging to log client lookups. -> -us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/dn800669(v=ws.11)
nslookup is just name lookups. Windows has another command for listing the hops between point a and point be, the command is tracert. Another command that is similar to tracert is pathping, it helps provides information on the hops and latency.
The trouble with "ping" is that it's not strictly a name server lookup tool (like nslookup) - for instance if you ping a hostname, it can be resolved to an IP address by a number of methods: DNS lookup, host file lookup, WINS (god forbid) or NetBIOS broadcast. It can also return a potentially out-dated cached result.
So if nslookup can translate, then lots of things work: networking hardware, NIC adapter driver, internet connectivity to the DNS servers, and successfully accessing the servers to do a translation. That's a lot!
This superuser post Why is 'ping' unable to resolve a name when 'nslookup' works fine? where the question had 35 upvotes and the best answer 27, is a good reference. There, people reported "other solutions for them" including:
That same superuser post Why is 'ping' unable to resolve a name when 'nslookup' works fine? where the question had 35 upvotes and the best answer 27, the best answer author said, "Some sites also recommend uninstalling and reinstalling SP3 in this case."
Reinstall TCP/IP (please continue reading...). I don't mean "reset it", "restart it", "re-enable it".In Windows 10 run "netcfg -u ms_tcp". This will IN FACT remove the protocol from your system. No more TCP/IP v4 on it.Reinstall the protocol the usual way (properties of network connection; add protocol).In windows 7 you could edit nettcpip.inf to allow you to unistall the protocol from the network connection properties, but that is not possible in Windows 10 (can't say in 8 nor 8.1).Hope this helps someone. RV
I'm currently having problems accessing one of my clients servers and it seems that there is probably a problem with the network connection between myself and the server. However one of the things I've tried is to get the actual IP address of the server via the nslookup windows command line tool. However this does not seem to work on my computer.
Running any nslookup command simply returns 'No response from server'.
In this particular example I've set up my DNS to use Cloudflare DNS but the same problem occurs if I use my provider DNS or Google DNS.I have no problem accessing the google servers and working with the internet so obviously DNS works. Does anybody have any idea why nslookup does not work?
DNS uses port 53. But some DNS servers listen on a different port. In that case, you'll have to tell nslookup to use that port instead. You can change the port nslookup uses by adding the -port=42 option.
You can run nslookup in interactive mode by typing nslookup without a domain name. This way, you can keep an nslookup session open. To set the DNS server in interactive mode, enter server 8.8.8.8 to switch to Google's public DNS servers.
If you use the DNS server's hostname, then nslookup needs to resolve that to an IP address. It will try to do so with the currently set DNS server. If that server can't resolve the IP address of the new DNS server, then you can use lserver instead. This will instruct nslookup to use your local DNS resolver instead of the one set in this nslookup session.
So this happened yesterday and is still happening now, When I went on my PC I was gonna open chrome and then this black thing that looked like the Command Prompt popped up, and the name of it was C:\Windows\System32\nslookup.exe and I checked there and there was nothing called nslookup.exe, and its getting pretty annoying, and I really just wanna fix this, its not some type after logon it pops up and doesent pop up anymore, im talking about every minute or half a minute, and while im typing this it keeps on popping up, can anyone help? also nothing called nslookup is download/in my PC, and when I go to cmd and search nslookup, it says "'nslookup' is not recognized as an internal or external command,
operable program or batch file." If you can help, please tell me and thank you
nslookup.exe is expected to be on Windows, as it's used as a command line tool for DNS queries.
Can you expand on your environment? Is this a domain-joined computer, or are you in a workgroup at home?
nslookup is located in C:\Windows\System32\ directory by default. Navigate to it, and right-click it to check it's Properties>Details tab. What does the Details tab list?
Does Task Scheduler have this listed as a schedule task?
I have not been able to research when Microsoft removed this feature from nslookup, but while I was troubleshooting a DNS error, I needed to try a different port for a DNS server and see if there was a firewall issue. It turns out that nslookup will not accept (but silently ignore) a set port= command.
I just noticed that no matter what port I tried, there was never any difference than running on port 53. Can anyone confirm that this works or doesn't work for them? And when did M$ change this? Their website makes no mention of removing it here and in fact says that the port= command should work: -us/windows-server/administration/windows-commands/nslookup
The nslookup command can be used in two modes: interactive and non-interactive. To initiate the nslookup interactive mode, type the command name only:
nslookup comes preinstalled on all major operating systems. If you need to install it again on Ubuntu or another Linux distro featuring the APT package manager, install the dnsutils package:
Note: The authoritative answer in the output of the nslookup refers to the answer provided by one of the nameservers belonging to the domain being searched. The non-authoritative answer is provided by a nameserver not associated with the specific domain, e.g., your ISP nameserver.
TL;DR After updating the tailscale agent on my windows pc, all of my nslookup requests using domains from local dns records created in my pihole instance, seem to be going through magicdns however I have magicdns disabled. Is this new or expected behavior?
I have a Unitrends backup virtual machine running as a virtual machine. I also have a Windows Server running as a virtual machine. I can ping anything on the network from the Windows virtual machine. I can ping the windows virtual machine from physical machines on the network. The issue is when using name lookup on the Unitrends backup machine the Unitrends cannot see the Windows server to back it up.
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