Questions tagged [nslookup]

nslookup is a utility to query DNS name servers

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How is DNS lookup order determined?

For example: we have registered domain name domain.com and added name server records at the registrars server: ns1.domain.com. ns2.domain.com. ns3.domain.com. Than we look up for domain.com. We get ...
Vitaly Kuznetsov's user avatar
25 votes
2 answers
23k views

SOA and Primary NS record (DNS)

The brunt of the question is this -- What is the relationship between the primary nameserver specified in the SOA record and the nameservers specified in the NS records. How are these things linked? ...
scraft3613's user avatar
2 votes
1 answer
2k views

DNS resolve timeout on RHEL 6.3 behind firewall

I have a server running Red Hat 6.3 Enterprise inside a VMWare virtual machine. There's a Juniper SSG 5 firewall sitting between the server and the Internet. I'm trying to diagnose what it looks like ...
Rômulo Ceccon's user avatar
15 votes
1 answer
32k views

Nslookup not using hosts file

So I've set public IP on the hosts file for a certain public IP address, but it picks up private ip from nowhere or from DNS. Content of windows hosts file C:\Windows\System32\drivers\etc\Hosts ...
ajsdg's user avatar
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9 votes
4 answers
74k views

DNS can't resolve hostname; nslookup can

I have a user on Windows 7 that is trying to access a local server with a DNS name of windows.cs. We have two internal DNS servers. The DHCP server assigns users the two internal DNS servers as ...
Safado's user avatar
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1 vote
1 answer
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8.8.8.8 returns NXDOMAIN randomly for all our subdomains

Our customers make quite a few domain checks towards Google public DNS with the following domains <userid>.sip.teltel.io, but they often fail. To others, like Cloudflare it is always successful. ...
11lll's user avatar
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191 votes
5 answers
455k views

DNS - NSLOOKUP what is the meaning of the non-authoritative answer?

For some domains nslookup gives me a Non-authoritative answer section. What does this mean? Got answer: HEADER: opcode = QUERY, id = 3, rcode = NXDOMAIN header flags: response, ...
mahen3d's user avatar
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36 votes
5 answers
124k views

List TXT records for a domain with Windows nslookup

I want to inspect TXT records for my domain, such as SPF records. I tried the following command with nslookup but it didn't list the TXT records: nslookup -type=TXT example.com What is the correct ...
Josh's user avatar
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27 votes
5 answers
117k views

How to find all hostnames in DNS attached to one IP?

If I have multiple hosts configured on one machine (a la apache's VirtualHosts), how can I do a lookup on the IP and find all domains configured to reach it? For example, I have several web and email ...
warren's user avatar
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6 votes
2 answers
7k views

Why is nslookup and dig giving me a "Warning: ID mismatch ... got 0" error?

I'm trying to troubleshoot some persistent connectivity issues and I'm frequently getting the following error message when using dig or nslookup. bash$ nslookup > www.google.com ;; Warning: ID ...
Ralph Callaway's user avatar
4 votes
2 answers
3k views

What are all the possible causes of the "An Active Directory Domain Controller (AD DC) for the domain ..." error message?

Earlier I was having issues connecting one of my workstations (client) to my domain, and I thought it was because the domain was not in my possession yet (reference: this question). But, due to the ...
michael's user avatar
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3 votes
5 answers
946 views

Detecting what causes the delay between entering a domain name and load of the page

My website takes awfully long time after entering the domain name and before the content starts showing up. I assume this is something to do with the dns resolution or the networks. How do I go about ...
Quintin Par's user avatar
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2 votes
3 answers
17k views

nslookup fails but ping succeeds for nonexistent domains

I have two different FreeBSD servers (different hosting companies), both exhibit this same behavior: They pick a specific IP address (216.239.120.238) for every domain that does NOT exist. nslookup ...
JimB's user avatar
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2 votes
1 answer
199 views

Do I have to own my domain before attempting to connect to my domain controller?

I am in the process of purchasing a domain, but I do not own it yet. I setup my domain controller as internal.domain.com. The problem I'm running into is in connecting my workstations to my domain. I'...
michael's user avatar
  • 171
0 votes
2 answers
4k views

NSLookup Requires "." in all queries

I am not sure what happened but after reinstalling Windows DNS (server 2012 r2), when I do an nslookup and enter any domain it appends my domain to the end. For example: I enter "microsoft.com" and ...
Jon Glazer's user avatar
0 votes
1 answer
590 views

Why do nslookup result differ when adding www? [closed]

See image above depicting different results for google.com and www.google.com. Any ideas why nslookup is behaving this way ?
DipakChaudhari's user avatar
0 votes
5 answers
5k views

NSLOOKUP and NBLOOKUP give one IP address; PING finds another

In a Windows Server 2008 domain the on-site domain controller serves as both DNS and WINS server. It is also a DHCP server. One workstation is used as a platform for all admin of the various servers ...
user2161082's user avatar
-2 votes
1 answer
3k views

nslookup does not work on certain IP address [closed]

when I gave nslookup 74.125.236.200 Server: 192.168.5.11 Address: 192.168.5.11#53 Non-authoritative answer: 200.236.125.74.in-addr.arpa name = maa03s17-in-f8.1e100.net. ...
VP7's user avatar
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-2 votes
1 answer
363 views

nslookup returns different IP than $_SERVER['SERVER_ADDR']

Without knowing much about system administration, here is in short what I noticed: running nslookup the-site.com returns some IP but running $_SERVER['SERVER_ADDR'] on that site returned different IP. ...
lyros's user avatar
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