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25
votes
2answers
55k views

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

When I do a NS Lookup, for some domains I get the reply saying Non-authorative answer:. I want to know what it means? Got answer: HEADER: opcode = QUERY, id = 3, rcode = NXDOMAIN ...
13
votes
5answers
35k 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 ...
8
votes
2answers
5k 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 ...
7
votes
2answers
17k views

How can I find the LDAP server in the DNS on Windows?

For Linux, this command should return the DNS record for the LDAP server host -t srv _ldap._tcp.DOMAINNAME (found at Authenticating from Java (Linux) to Active Directory using LDAP WITHOUT ...
6
votes
7answers
38k views

What can cause a DNS lookup to ignore a hosts file entry?

I'm having a DNS resolving issue that is affecting the performance of my locally hosted web site when browse it on my local machine. If I attach my network's DNS suffix to my local machine name when ...
6
votes
4answers
15k 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 ...
6
votes
3answers
11k views

nslookup for SRV records (or any non-A records) in non-interactive mode

Is the anyway to run nslookup (Centos 5 or Windows) such that it will look up record types other than A, without having to go to interactive mode and using set type=? For example, I'd like a command ...
6
votes
2answers
3k views

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 ...
5
votes
2answers
2k views

Why can host and nslookup resolve a name but dig cannot?

Can anyone tell me why this is happening? I can resolve a hostname using host and/or nslookup but forward lookups do not work with dig; reverse lookups do: musashixxx@box:~$ host someserver ...
5
votes
2answers
4k 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? ...
4
votes
2answers
1k 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 ...
4
votes
1answer
1k views

My Vista's nslookup returns an ipv4 address for an ipv6 site

the command: nslookup ipv6.google.com doesn't work quite well. somtimes it returns an correct ipv6 address, sometimes it returns an ipv4 address. How can this happen? [im using OpenDNS] much ...
3
votes
3answers
16k views

What does “Default Server: Unknown” mean for Windows nslookup

I'd like to solve a question with your kind help, about nslookup on Windows. Please see my CMD commands below(run on WinXP SP2). C:\>ipconfig /all Windows IP Configuration Host Name . . ...
3
votes
3answers
8k views

How to get **all** IP addresses of a domain?

I built the getaddrinfo() sample provided at http://beej.us/guide/bgnet/output/html/multipage/syscalls.html#getaddrinfo When I run it on an example domain, such facebook.com it lists three (3) IP ...
3
votes
2answers
2k views

IP address used by nslookup and ping is different

I have a web server hosted in the network. It has a domain name registered. However, I also host a DNS server for the LAN. So, when someone wants to access the web server, it would check the DNS ...
3
votes
5answers
530 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 ...
3
votes
3answers
5k views

Strange redirect to localhost! http://dp.000.in/?

I just accidentally typed imadb.com and after 2 redirects (I think) I ended up at: http://dp.000.in/ You can imagine my surprise when I noticed I was seeing my webpages on my local host! Can someone ...
3
votes
1answer
972 views

Google Public DNS is returning a SERVFAIL for my domain

Hope some one will help me in resolving the issue. My Domain name is "prohosterz.com" Google Public DNS is returning a SERVFAIL for my domain: $ dig prohosterz.com @8.8.8.8 ; > DiG 9.9.2 > ...
3
votes
1answer
915 views

DNS lookups with/without recursion in NSLOOKUP

I am playing around with NSLOOKUP trying to learn about recursive DNS lookups. I am looking up a bogus host name and I seem to be getting the same results whether I enable or disable recursion. With ...
2
votes
3answers
143 views

How to get pairs of name server - ip for some domain? [closed]

I want to get pairs of name server - ip for some domain. For example, there is serverfault.com domain. I want to get: NS1.SERVERFAULT.COM - 198.252.206.80 NS2.SERVERFAULT.COM - 198.252.206.81 Is it ...
2
votes
1answer
4k views

Why is nslookup reporting two IP addresses?

I made a DNS change a few hours ago and I just ran the following command with the following output: nslookup mydomain.com ns1.mynameserver.com Server: ns1.mynameserver.com Address: 111.111.111.111 ...
2
votes
4answers
974 views

nslookup/dig differ from how a browser resolves a hostname

At my site, we just moved an important service, and made the appropriate DNS changes internally and externally to make it work. When you bring up the site in a browser, it works fine. (Works in ...
2
votes
1answer
94 views

How to get authoritative answers from nslookup? [closed]

Why is it "Non-authoritative"? Even when I look for yahoo.com ip with ns3.yahoo.com I get Non-authoritative answer. Why does a yahoo server keep stackoverflow's ip? From where do I get ...
2
votes
1answer
2k views

Resolve hostname without FQDN

I'm trying to configure Bind for internal LAN usage only (Linux server, Windows clients) and I would like to resolve workstation both by fqdn and shortname. For example, without DNS server, supposing ...
2
votes
3answers
5k views

Determine if DNS server is master or slave with DiG

Is there a way to use DiG or nslookup to determine if a server is set to Master or Slave? And if a server is slave, return the Master's IP address?
2
votes
1answer
98 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. ...
2
votes
2answers
774 views

Tool to do batch lookup of DNS servers assigned to specific domains

While there are a handful of tools that let you drop a list of domain names and return any DNS record pertaining to those domain names, I have not been able to find a tool that returns the DNS servers ...
2
votes
3answers
316 views

Retrieve a domain name based on an IP Address?

I'm reviewing some apache logs, specifically with respect to downloaded files. I'm interested in knowing, if possible, which domain is responsible for the download, given an IP address. I've given ...
2
votes
1answer
7k views

server can't find XXX.in-addr.arpa: NXDOMAIN

I am facing problem while configuring BIND DNS sowing server can't find XXX.in-addr.arpa: NXDOMAIN while reverse dns check! everything works on forward DNS lookup but reverse DNS lookup fails. Here ...
2
votes
1answer
2k views

Named on AIX (5.3) - DIG won't find hosts without FQDN?

Ok I'm a newb to AIX and Named, so hopfully I'm just missing something easy. :) The goal is to just have smooth DNS lookups in this goofy Windows workgroup/AIX DNS setup (it will change eventually, ...
2
votes
1answer
28 views

Detecting a network from ansible playbook using nslookup

I am working on a Vagrant + Ansible configuration for my team that sets up a developer VM, some of the artifacts needed are only available from my corporate network either by being physically on it or ...
2
votes
2answers
993 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 ...
2
votes
5answers
3k views

Ping hostname works but nslookup to hostname doesn't

I have a Windows 2008 standard server which can ping by hostname and give me the proper IP address back however if I try to do an nslookup on the hostname I receive: server: nmgdc1.nmg.local Address ...
2
votes
1answer
194 views

How to get ip prefixes from children of given as number?

So, for example I have as number as10282 how I can get ip prefixes of children for the given as number? bgp lookup tool Given tool is exactly what I need (with ticked include downstream prefixes), ...
2
votes
1answer
95 views

How do I find the all domain names where name-server is authoritative?

is possibles query a name server and have the list of domains for which he is authoritative?
2
votes
0answers
3k views

OSX nslookup can resolve a lan hostname, but ping cannot? [closed]

I'm having an issue which recurs every few days, whereby ping cannot resolve a hostname on my LAN (but nslookup is able to). This is on OSX 10.9.2 (latest). The machine in this case is called ...
1
vote
1answer
2k views

Why does nslookup return two or more ip address for yahoo.com or microsoft.com?

I am newbie with dns What is the exact reason that some sites report two or more ip address while others report single ip? 1) Is it feature or error in configuration? 2) Is it something related to ...
1
vote
2answers
112 views

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 ...
1
vote
3answers
4k 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 ...
1
vote
1answer
1k 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 ...
1
vote
1answer
657 views

Bind reverse lookup failing

I have set up my bind server but am unable to perform reverse look up the nslookup. The config file looks like this. acl "internal" {192.168.5.0/24;}; view "internal" { match-clients ...
1
vote
2answers
451 views

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 ...
1
vote
1answer
5k views

Ubuntu DNS Lookup Failure

Some one installed and configured ubuntu on a virtual machine hosted on a machine in our network. I've recently noticed that all DNS lookup's fail but i cant find a solution to this. I've tried a ...
1
vote
2answers
127 views

List all targets that are available on someones third party DNS server [duplicate]

Possible Duplicate: how to request/acquire all records from a DNS? I want to configure my DNS server the same as this third party DNS server for a given domain. It is temporary. We are ...
1
vote
2answers
68 views

Network Scan, Filtering for Top Level Domain

Greetings, I have a list of 2 /24s worth of IP addresses in seperate text files. What I am interested in doing is finding a way to resolve the hosts of these IP addresses and filter out to display ...
1
vote
1answer
52 views

Understanding apparent DNS changes between centos 6 and 7

I have a couple of test systems running Centos 6 and I thought I'd try out Centos 7. Apart from all the obvious differences (no iptables, no ifconfig), there is one thing that really had me scratching ...
1
vote
2answers
69 views

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, ...
1
vote
1answer
77 views

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 ...
1
vote
1answer
297 views

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: ...
1
vote
1answer
4k views

How do I fix name-server “mismatched NS record”?

I am a beginner here, so please be easy on me. I have bought my domain name from a local registrar of my country(mitsu.in) and bought my domain name www.ashurocks.in from there for about 8 months ...