The tag has no wiki summary.

learn more… | top users | synonyms

0
votes
1answer
1k views

Can't resolve local IP using remote dns server

I'm trying to do something I thought would be pretty simple. Mapping local.mydomain.com to 192.168.0.1 using my registrar's DNS server.(namecheap.com) I've added an A Record for local with value of ...
0
votes
0answers
223 views

Odd DNS behavior on multiple Ubuntu 12.04 VMs. NSlookup and Dig resolves hostname but ping cannot

In attempting to set up a VoIP server, I came across some interesting behavior from Ubuntu. My VoIP account was assigned a unique hostname that I am to connect to, however, Ubuntu is unable to ...
0
votes
1answer
840 views

What does #53 mean in nslookup nameserver address result?

When I run this: nslookup some.host.com I get results like this: Server: 4.2.2.1 Address: 4.2.2.1#53 Non-authoritative answer: Name: some.host.com Address: #.#.#.# "4.2.2.1" is ...
0
votes
2answers
155 views

www.nanog.com resolves to localhost [closed]

By mistake typed www.nanog.com while trying to visit http://www.nanog.org/ and landed to localhost. The url www.nanog.com resolves to localhost somehow, even with google's DNS server. Just for ...
-1
votes
2answers
375 views

Simple dig output?

In a script I want to be able to write an IP address to somewhere easily, so I thought using dig (or a similar command) with back-ticks. However the simplest output I've been able to come up to wrt ...
-2
votes
1answer
867 views

Nslookup - Querying my Internet Provider [closed]

I'm trying to nslookup all records of my internet provider, but it's returning "Result too large". I'm using the Windows nslookup.exe. example: nslookup.exe >server ns1.brtel.com.br >set ...
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 ...
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 ...
0
votes
3answers
615 views

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 ...
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 ...
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 ...
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 ...
0
votes
2answers
1k views

Intermittent DNS failure

Currently, I am struggling with a problem causing one of our servers to lose its DNS access in irregular time intervals. The symptoms are that, for some minutes, any call to nslookup fails with error ...
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 ...
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 ...
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 ...
-3
votes
1answer
179 views

switching hostname when I resolve IP address reversely via “nslookup” command

There's a network issue in my office so I ran Look@LAN application to check network condition of some windows PCs. All of sudden, I found out a resolution of IP address of some PCs are switching ...
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 ...
0
votes
1answer
95 views

Concise set of rules for discarding DNS responses, or portion therein

Problem statement It is possible for any name server on the internet to become "Authoritative" for legitimate, and illegitimate zones. For example, I can add microsoft.com to my internal name ...
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 ...
0
votes
2answers
985 views

Unable to resolve host name on certain ISP

Two people on the same office. One uses WIFI on a broadband network and the other one uses Tele2 3G (Sweden), both from a Macbook Pro. When they try to open www.good-morning.se on their browser, the ...
1
vote
3answers
2k views

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 ...
0
votes
3answers
542 views

DNS not working on WS2003, but nslookup works fine

I have a virtual machine with Windows Server 2003 (SP2). The DNS resolution seems to be broken, but the nslookup command works fine. Well, I guess that means that the DNS resolution works fine, but I ...
0
votes
2answers
2k views

How do you run an nslookup on an iPhone?

Folks, I'm trying to diagnose a connectivity issue between various iOS clients on AT&T scattered across the country and my website. They appear to be able to access my website by IP address but ...
0
votes
3answers
1k views

DIG connection times out DNS [closed]

I'm at home (COMCAST is the ISP). I can run nslookup and resolve IPs fine. When I run dig I receive "connection timed out: no servers could be reached" I'm going to fireup a network trace but ...
0
votes
1answer
160 views

semicolon in DNS name when nslookup resolving CNAME

I am running two Win2k3 and one Win2k8 DNS servers (and AD) in the same domain, country1.company.com. The DNS servers all have a secondary DNS zone for the AD domain country2.company.com. The two AD ...
0
votes
2answers
116 views

My server IP routing problem

I am unfortunately from Iran and I have a Problem with my server. when I type in windows CMD nslookup ParsCMS.com 4.2.2.4 it can not find my server IP, but nslookup ParsCMS.com 8.8.4.4 returns ...
1
vote
2answers
495 views

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 ...
0
votes
1answer
673 views

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 ...
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 . . ...
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 ...
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), ...
0
votes
1answer
230 views

How do I address “DNS poisoning”?

When I try to connect to SQL Server Express on another machine in the corporate network I face "Cannot generate SSPI context". My machine runs Windows XP and that machine runs Windows 2003 and I don't ...
2
votes
2answers
773 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 ...
0
votes
1answer
180 views

Getting a reverse lookup answer from nslookup but not from dig

So if I use dig to do a reverse lookup I get: $ dig 71.74.56.122 ; <<>> DiG 9.6.0-APPLE-P2 <<>> 71.74.56.122 ;; global options: +cmd ;; Got answer: ;; ...
0
votes
4answers
313 views

nslookup authority

I'm using nslookup and trying to figure out the difference in authoritative and non-authoritative responses. These two responses seem to be consistent (they give the same answer if you run the command ...
1
vote
1answer
656 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
1answer
146 views

Some Can reach bidmail.com others can't

On a Windows 7 Professional machine in Chrome one of our estimating assistants can't get to www.bidmail.com, however the other 3 can. On his machine I did nslookup then bidmail.com and it fails to ...
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 ...
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 ...
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
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 ...
0
votes
2answers
460 views

How do I read this ANSWER line in an nslookup

I performed an SOA nslookup on a domain and I am little confused by the exact meaning of the output (see below...names have been changed to protect the innocent): ;; QUESTION SECTION: ;MYDOMAIN.COM. ...
1
vote
1answer
545 views

View Public Key in Domain Key for a Domain

Using Jeff's blog post I'm creating domain keys for my account. I wanted to verify the setup using Get or Host command with Bind for Windows but I'm lost one of the commands. I can see view the ...
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 ...
0
votes
3answers
238 views

How to get from a name server all A records pointing to a specific IP

How can I get from a specific name server, say ns.example.com, all A records pointing to a specific IP x.y.z.w ?? I've been trying with reverse DNS lookup tools, but I cant manage to get what I need. ...
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, ...
0
votes
2answers
546 views

I'm having some issues doing a reverse zone lookup on my nameserver

I've been trying to setup my Zones files in Bind9 and I'm having some issues with the reverse zone lookup. My nameserver is running a Query Refused when I attempt to perform a lookup on the IP. ...
1
vote
2answers
115 views

How to access this server?

I have a server that I cannot access. At first I thought it was just some temporary failure with the server, but checking from other IP addresses reveals that it is working just fine. It's only my IP ...
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?