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Questions tagged [nslookup]

nslookup is a utility to query DNS name servers

nslookup is a utility to query DNS name servers. It has two modes: interactive and non-interactive. Interactive mode allows the user to query name servers for information about various hosts and domains or to print a list of hosts in a domain. Non-interactive mode is used to print just the name and requested information for a host or domain. It is available on several systems like Unix-like systems and Windows systems.

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How to change hostname without reboot?

I follow the instructions in https://askubuntu.com/questions/87665/how-do-i-change-the-hostname-without-a-restart. The host name is changed correctly when I verify using "hostname". However, there is one issue. Since I only change the host name but…
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How to determine which server is the cause?

I have just registered a new domain with Malaysia NIC. The registration system is not fully automatic and I am afraid that someone could have botched something in the setting up. At the same time, my hosting company, 1and1, is also having some…
Old Geezer
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nslookup requests time out regardless of server - ping is fine

I've been having intermittent internet connection issues for a week or so now. I now suspect that these are just DNS issues rather than connection issues. At the moment I can ping google.co.uk no problem at all (173.194.41.159) but I can't use…
Roaders
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Some people can access and nslookup my website but some others cant?

I am having a very weird problem with my server. Most people and myself can access normally without problem but some others report they cant and the only way they can access is through proxies and so. If i perform a nslookup in my domain i can see…
Nuker
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Why are additional DNS records only returned when the query isn't cached?

I'm trying to track down an issue we're having sending mail to a particular domain. We noticed that we're not getting consistent results from nslookup/dig when querying their MX records, and I'm not sure if we're chasing a non-existent DNS problem…
rtf
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How to diagnose flaky nslookup/bind9?

BACKGROUND I have a long running DNS (bind9) server running on Ubuntu that works most of the time (from Ubuntu, Win8 or OSX): $ nslookup gitserver Server: 127.0.1.1 Address: 127.0.1.1#53 Name: gitserver.foobar.com Address:…
kfmfe04
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Trouble with DNS configuration

I'm having trouble with DNS configuration for a domain and do not know how to trace it properly. From trying to troubleshoot with nslookup, it seems as though the authoritative NS are never being contacted. But when I check the whois for the…
Eric B.
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Why do I sometimes (but not always) see "internet address" data for an MX record in output for nslookup queries?

CentOS 5.x I've noticed that sometimes I'll see "internet address" for an MX record in the output of nslookup. This doesn't happen all the time though. For example, let's say that foo.com uses Microsoft for their mail service. In that case,…
Mike B
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nslookup: non-authoritative answer

When I nslookup behind our firewall i got Non-authoritative answer like this Non-authoritative answer: Name: sitius.com Address: 173.44.39.70 but if i nslookup from public internet access i got this address1: 173.44.39.70…
Blitzcrank
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nslookup filter only nNon-authoritative answer answer

I want to filter out Non-authoritative answer Address information if it exists so that in response I would get only "127.0.5.0" and nothing when there is nothing returned. Here is example: user@machine:~$ nslookup…
Edijs Petersons
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Reverse Lookup in Linux - Trying Next Server on NXDomain

I have an application on a Linux box that uses reverse lookup to resolve hostnames. The problem is, I have two sets of DNS servers in my resolve.conf (4 servers total), with each set corresponding to a different range of IP's. It works fine for…
Hypercoyote
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Synchronized DNS-servers return different responses

I have two servers: alpha.mydomain.net - 209.110.172.195 beta.mydomain.net - 185.169.74.16 Both of these servers come with WHM software installed. With the help of WHM I configure DNS cluster on them. So or DNS records created on alpha server are…
German Zvonchuk
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local dns server don't respond to class NS queries

iam trying to execute the following command nslookup -type=NS mit.edu but each time it gives the following answer Non-authoritative answer: *** Can't find mit.edu: No answer i have tried several sites other than mit.edu and got the same results it…
Ahmed Kotb
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NSLookup very inconsistent, slow, failing. Not Hardware error or OS Error. Can't identify problem

Multiple computers inside the network run various OSes, and connect through Wi-Fi or Physical connection. My desktop runs Ubuntu 11.04 64 bit, and has consistently slow or failing NSLookups. I bought a new network card, which didn't help. Bought a…
skyronic
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Nslookup returns different results every run

When I run nslookup using our (it defaults our domain NS as the source of information) I get different results every time for known computers on our network. Can some one explain if this is normal, why it is normal? Or if it needs to be resolved…
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