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Questions tagged [nslookup]

GENERAL NSLOOKUP SUPPORT IS OFF-TOPIC. Support questions may be asked on https://superuser.com. nslookup (name server "lookup") is a utility that queries the Domain Name System (DNS) to obtain domain name or IP address mapping.

nslookup is commonly used to refer to the network administration command-line tool found in most operating system, but can also be used to reference component libraries, which are available for a variety of programming languages.

References:

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How to collect IP addresses of specific domain as many as possible?

How to collect IP addresses of specific domain as many as possible? Using nslookup or dig command, there is limitation to collect whole IP address. How can I collect IP address that DNS server is not provided.
Jehyun Shim
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DNS nslookup or dig command and reverse command

Type command 'dig google.com' in cmd, then I can get result as following picture. google.com. 300 IN A 74.125.235.104 google.com. 300 IN A 74.125.235.110 google.com. 300 …
Jehyun Shim
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how to configure travis to allow me to use nslookup

I wrote my own open source library code. https://github.com/simkimsia/UtilityLib/ I have a function which attempts to get IP address by host. https://github.com/simkimsia/UtilityLib/blob/master/Lib/HttpLib.php#L34 I wrote a test case for…
Kim Stacks
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shared libraries of dig and nslookup

I am using centos 6.4. While doing dig or nslookup, I got below error dig google.com dig: error while loading shared libraries: libcrypto.so.4: cannot open shared object file: No such file or directory here is my ldd of dig '# ldd /usr/bin/dig …
Sokphak
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[System.Net.Dns]::GetHostEntry method resolves IP to HOSTNAME without PTR record?

I am trying to use Dns.GetHostEntry method to get the HOSTNAME for a given IP from the DNS server. According to the documentation, the method first tries to do a reverse lookup on the IP address. In my case this is always successful when I use…
Davor Josipovic
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DNS lookup failing

I have a primary and secondary domain controller that we use as our DNS servers. Users are getting mixed results with accessing websites. Some work fine, others are giving an error: Network Access Message: The website cannot be found Explanation:…
deweycooter
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How to get count of unique IP addresses and errors in shell scripting using uniq or awk?

I am doing a nslookup on URLs for multiple iterations using shell script. I need to check how many times IP was returned for each URL. In output file, output is stored as URL IP address using uniq -c command I get the count when same IP addresses…
user2074894
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Is there any iOS SDK equivalent of gethostbyname and inet_ntoa functions?

I saw several questions here, but is's still not clear for me. And could Apple reject for using standard gethostbyname function?
m8labs
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nslookup output

Here's some simple output from nslookup: nslookup www.go2linux.org Server: 4.2.2.2 Address: 4.2.2.2#53 What does #53 mean over there?
Ricky Robinson
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DNS not working on Windows 7

Yesterday, my internet stopped working. I can't access the internet via IE/Chrome, but Firefox still works. I have resetted Winsock. Ping via name doesn't work either, but with ip it still works. Doing a NSLookup of something like google.com does…
DebboR
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Running NSLOOKUP against some urls to print out url that is not equals to some IPS i have

I have some Web URLs I am trying to do a nslookup against. All it does is check against the URL and print the ones not equals to some certain IP Address into a file. I am able to do it for one IP Address but i tried adding one more, and I am unable…
Abby
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Connect to DNS names trough SSL and manually specify IP of the DNS record (Local DNS poisoning/Spoofing)

I'm currently working on a script that will test the health of an ADFS service. The ADFS service uses the same domain name (split brain DNS) for both intranet access, as well as for public DNS (for internet connections through the proxy servers). If…
Olivier López Ch
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nslookup showing a lot of information

I am taking a CS course and we're looking into the nslookup command. When my instructor does it he gets only the non authoritative results. When I type it, I get a ton of info with the info I'm looking for based on the -type== option than I input…
TeaLeaf
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nslookup command in loop, only executes once in Linux Bash script

In the following script block, I attempt to execute an nslookup on each fqdn being read from a file. However, the script stops after executing the first nslookup command. Code: for HOST in `cat ./rhel_hosts` do echo; echo "EXECUTING…
T. Ujasiri
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Why does AWS Route 53 not publish my DNS records?

I have domain domain_name.it (domain_name = my actual domain) bought from/registered with Route 53, and using Ruote 53 to configure DNS records for that domain. I want to get my email setup for the domain with Google Suit's gmail. I add MX DNS…
Nhan Ng.
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