Questions tagged [nslookup]

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dig and nslookup results connection timeout for my subdomain.cloudns.nz using 8.8.8.8 as dns but it works for anything else or from somewhere else

when i run dig @8.8.8.8 mysub.cloudns.nz i get this : ; <<>> DiG 9.16.1-Ubuntu <<>> @8.8.8.8 mysub.cloudns.nz ; (1 server found) ;; global options: +cmd ;; connection timed ...
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ping dns works but nslookup fails?

I have an issue with DNS in my current lab environment, this happened after a snapshot recovery on the DC image : Following Screen shows that i can ping google.com but nslookup google.com fails, i ...
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2 answers
996 views

Nslookup on new Windows Server (localhost)

What do I do if I only get "localhost" "127.0.0.1" when I type in nslookup in cmd. I want another server to show up when typing this command. I already included a Reverse-Lookup-...
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Windows 10 - Nslookup resolves name but Ping does not (after OpenVPN broke things)

My wife needed to use OpenVPN to connect to her work network. Several times in the past, this has caused her machines to suddenly report 'no internet connection' Basically, no more DNS. Sometimes, ...
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Why is nslookup on windows so slow?

I have always noticed that nslookup on any windows machine is... slow. Example in powershell: Measure-Command { nslookup superuser.com } TotalMilliseconds : 1318.4933 This typically takes 1.0 to 1.5 ...
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Intermittent nslookup DNS request timed out

My home internet has felt a bit clunky for the last week. If I run nslookup on a site it seems to timeout about 1 out of every 5 times, while working fine the other attempts. >nslookup www.google....
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How to correctly use delayed expansion to not return an empty value?

I'm making a small script. The goal is to have a list of server names (domain names) in servers.txt. They will be resolved into IP addresses using the nslookup command and saved in results.txt as ...
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nslookup fails with timeout if ipsec and openvpn connected at same time win 10

I have strange behavior with dns resolving when being connected with two vpn clients at the same time. I have one openVPN Client (Endian Connect App) and one FortiClient with IPsec configured. With ...
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DNS Resolving failure in Windows but works in other OS

(Caution: The website is in Chinese) I am trying to access a website (http://zp.sesedu.cn). I cannot access it using any Windows computer, including two Windows 10 computers (one Windows 10 home and ...
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1 answer
95 views

nslookup on azure postgres server - output explanation

I created a new postgres database in azure. Lets assume, this database has the server name URL mytestdatabase.postgres.database.azure.com While doing a nslookup on this URL, i'll get the following ...
4 votes
4 answers
9k views

How to properly test a local DNS server locally?

Context I intended to set up a local DNS server with Technitium and would like to verify the local DNS server returns the correct response when it is being queried for a domain. It does not work while ...
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no outside internet access from machine

Running multiple ubuntu machines. everytime I curl something I get a curl(6) could not resolve host: www.google.com nslookup gives me a time out apt-get update fails with error: Temporary failure ...
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0 answers
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I cannot access any website other than google by writing its IP address in my web browser

As an initial learner of Computer Networks I am exploring nslookup command. When I paste IP address of www.google.com given to me by my DNS server (which is 8.8.8.8 google DNS) it open the Google's ...
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1 answer
757 views

nslookup from another name server

I need help figuring out why my DNS queries are being refused. So this works: And this does not work: I can perform a DNS lookup of aiit.or.kr from Google DNS (8.8.8.8) however I can't perform the ...
1 vote
1 answer
1k views

nslookup: disable reverse dns lookup on dns server on windows/linux

when you run: nslookup domain dns_server the utility performs a reverse dns on the dns_server, even if a hostname was provided instead of an IP. is it possible to disable that feature?
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What does the # symbol after an IP address mean?

I resolved an IP address from a URL using nslookup and noticed the following: nslookup https://example.com Server 192.168.3.214 Address 192.168.3.214#53 What does the #53 at the end mean?
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Chain arp and nslookup to get hostname for each ip (Win)

I would like to see the name of the devices when i do arp -a. As far as I understand there is no option to do it directly with arp. So I thought that maybe it is possible to do nslookup for every ip ...
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Why my domain doesn't map to the server address?

I have installed DNS server and network manager on my remote server as by following this instruction: https://www.linuxtechi.com/setup-bind-server-centos-8-rhel-8/ as below: var/named/fwd.sssss.com.db:...
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nslookup and dig error: connection timed out; no servers could be reached - even when specifying server

I'm on Ubuntu 18.04.3 and my internet suddenly stopped working. I can ping local and WAN ip addresses and I have already restarted the network: sudo service network-manager restart These commands: ...
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1 vote
2 answers
2k views

Windows 10 ping not resolving name but nslookup does

I have a windows 10 machine that is exhibiting some odd behaviour. When I try and devices on my network by name they fail to resolve. However a ping -a of the iPaddress will resolve to the correct ...
-1 votes
1 answer
156 views

backward nslookup ip in DNS setup centos 8

I setup a DNS server on CentOS 8. But the command "nslookup " has not correct output. The output not contains the nameservers which I set for it.
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1 answer
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How do I change the default server for nslookup?

So, I have two network cards in my computer on two separate networks. I'd like to have nslookup use slcity server as the default server. However, it automatically chooses sltv. How do I change the ...
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1 vote
2 answers
4k views

How to get IP address of my proxy server using CMD or PowerShell

I use a proxy application (like Psiphon or ProtonVPN) to connect to the internet. I want to get my IP address that I'm connected to the internet with. I need to use CMD or PowerShell because later on,...
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1 answer
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Nslookup does not resolve IP addresses using the secondary DNS

I have two Ubuntu 18.04 DNS servers and a Windows 7 client in a virtual environment. I have set the Ubuntu servers for clients' DNS. The first one is offline and the second is online. When i try to ...
1 vote
1 answer
633 views

postfix in docker cannot resolve hostname of relay host

My postfix instance running in a docker container seems to be unable to resolve the hostname of my relay which is outbound.mailhop.org (formerly Oracle and now owned by DuoCircle). Relay fails with ...
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1 vote
2 answers
463 views

How do I do a reverse DNS lookup from IP address to domain name?

I want to know the source of a server IP address domain name. For example, as shown in the picture, the domain name meping.igamecj.com replies with 20 addresses, so my main question is how do I use ...
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1 answer
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Get sub domain on AWS by IP address

I have AWS Route53 zone hosted for my domain xxx.com. Inside I have A record that maps sub.xxx.com to my server IP 1.2.3.4 How can I find the sub.xxx.com value by just passing the IP? I tried ...
1 vote
0 answers
3k views

nslookup failures *** UnKnown can't find www.vmware.com: Query refused

I am on a VMware environment. On the host machine I do C:\WINDOWS\system32>nslookup www.vmware.com Server: UnKnown Address: 109.169.85.7 *** UnKnown can't find www.vmware.com: Query refused ...
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1 answer
11k views

Why I can't ping external IP and resolve DNS from this Linux Ubuntu machine?

I am not so into networking and systems engineering. I have an Ubuntu 18.04 VM that is in a network of a client that is 1) Unable to perform ping of addresses external to the network (but I can ...
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DNS redirect to localhost

Is it normal ? I configured in Windows settings the IPv4 DNS of OpenDNS and the nslookup in CMD return for a domain [::1] or 127.0.0.1 from fe80::a63e:51ff:fe58:9ddd I tried the same on WSL and and ...
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-1 votes
1 answer
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Why does NSlookup return IP address even if the DNS server is fake?

Originally asked in a newsgroup, full log: https://groups.google.com/forum/#!topic/microsoft.public.windowsxp.general/Ll32NWComwY The snapshot shows the DNS answer is truly returned by the fake ...
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1 answer
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Having two IPs for same hostname -- ping is sticking with the old IP and not trying the new IP

I thought there is a 1:n connection between IP and hostnames. However what I get is this [me@neo ~]$ nslookup dozer Server: 192.168.178.1 Address: 192.168.178.1#53 Name: dozer.fritz....
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2 votes
1 answer
9k views

NSLookup not working (Win10)

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'...
0 votes
1 answer
300 views

Why does a nslookup on Amazon's DNS servers return NXDOMAIN?

I ran nslookup on amazon.com and received: Non-authoritative answer: Name: amazon.com Address: 205.251.242.103 Name: amazon.com Address: 176.32.98.166 Name: amazon.com Address: 176.32.103.205 ...
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1 answer
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why nslookup return a private ip address first

why below nslookup return 10.172.0.1 , what does that mean? nslookup -type=mx www.google.com Server: 10.172.0.1 Address: 10.172.0.1#53 Non-authoritative answer: *** Can't find www.google....
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1 answer
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NSLookup Unable To Resolve Local Computer's Hostname

I went through all of the suggestions here: Windows unable to resolve hostnames I recently discovered that I cannot resolve any Windows host name (i.e., the computer name). For example, if open a ...
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1 answer
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Unexpected IP Address When Using NSLookup

My desktop is running Windows 10 Enterprise 64-bit along with an ASUS RT-N56U router. My router's DHCP range is from 192.168.3.2 through 192.168.3.100 and the gateway is at 192.168.3.1. But this ...
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1 vote
2 answers
4k views

Is it possible to show I got non-authoritative answer from which server?

I am not very clear with how the non-authoritative answer is given. For some domains I get this kind of results: root@localhost:~# nslookup > set query=ns > foo.org Server: 8.8.8.8 ...
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1 vote
1 answer
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What's the NXDOMAIN meaning of nslookup?

I use nslookup to check a domain's IP address: dele-MBP:~ dele$ nslookup www.ts111.com Server: 192.168.2.1 Address: 192.168.2.1#53 ** server can't find www.ts111.com: NXDOMAIN but what's the ...
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Multicast name resolution in the latest Win10

Version 1803 (OS Build 17134.590) I haven't found any working solution for the multicast name resolution issue in Win10. I cannot imagine, that everybody started to set-up an own Domain Name Server ...
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55 views

Why has one PC suddenly become unable to see one one particular website?

The website is bitbucket.org. I only noticed when a push timeout out. The issue is only on one PC (Win10). Chrome, Firefox and Edge all have the issue. All other PCs' on the network, and an iPad, ...
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-5 votes
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How do I block domains using the hosts file on Windows?

I used to block domains on Windows using the hosts file like the following: 127.0.0.1 www.cnn.com However, now it is not working and the domains are resolving. $ nslookup www.cnn.com Non-...
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1 vote
1 answer
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How come this query shows the same address for non-authoritative answers and authoritative answers?

So, if i query slash16.org: nslookup -type=ns slash16.org Non-authoritative answer: slash16.org nameserver = ns-686.awsdns-21.net. slash16.org nameserver = ns-1989.awsdns-56.co.uk. slash16.org ...
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1 answer
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nslookup works on 5GHz network but not 2.4GHz

We recently had a power interruption, and our wifi thermostat now has intermittent connectivity. I contacted the thermostat manufacturer, and they said that nslookup has to work for the thermostat to ...
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6 votes
1 answer
22k views

Using nslookup with google IPv6 DNS?

I am trying to use nslookup to query google.com with 2001:4860:4860::8888, which is google IPv6 DNS. But I get no response, eg connection. always times out. When I try same procedure just as DNS put ...
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2 answers
8k views

NSLOOKUP fails while ping -a and Resolve-DnsName -DnsOnly succeeds

I am trying to complete an nslookup for a number of hosts on an affiliated domain, but all nslookups fail. The usual explanation is that the connection is due to NetBIOS however in this case Resolve-...
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1 answer
4k views

Why is "dig localhost" so much quicker than "nslookup localhost"?

When looking up the address for localhost, nslookup localhost takes ~15 seconds: $ /usr/bin/time nslookup localhost ;; connection timed out; no servers could be reached Command exited with non-zero ...
2 votes
1 answer
3k views

LLMNR vs DNS - Why is 'ping' using llmnr instead of dns, unless I append a '.' to the hostname, and why is llmnr not working?

I am operating on a LAN closed off from the internet, and there are a few devices (A, B, C, ...) connected via ethernet cable to a single router making this LAN possible. Operating system on all ...
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2 votes
0 answers
1k views

Why does Chrome take longer to resolve new DNS entries when ping and nslookup works immediately?

I have an internal DNS server with a TTL set to 300. Whenever I add a new host, the command line ping and nslookup commands work immediately and resolve the new address without issue. However in ...
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How to set up DNS server on same machine as web server?

I'm trying to set up a DNS server on the same box as my web server. I have been following this tutorial and others like it but none of them describe what to do if the DNS server is going to be on the ...
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