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Questions tagged [nslookup]

The tag has no usage guidance.

16
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3answers
2k views

How can it be that ssh somename works, while nslookup somename does not?

How to know the IP address of some host somename I can ssh to? If I do nslookup on this host it says "no answer". How can ssh resolve it's name then? Neither /etc/hosts nor .ssh/config explanation ...
0
votes
0answers
119 views

nslookup: return only IP address

My research indicated nslookup was never really intended for scripted use: use dig instead, which with the +short option produces machine-readable output according to the query parameters. dig +...
0
votes
1answer
36 views

Nslookup cannot find name servers without www

Our site is responding to nslookup if it is fully written. nslookup www.example.com - it responds and shows name servers. But if we write without www, like nslookup example.com - it cannot find ...
1
vote
0answers
66 views

debian 9 dns lookup does not work after creating bridge [closed]

Debian 9 has been installed and a also bridge device like described in https://wiki.debian.org/BridgeNetworkConnections It is reproducable that the DNS lookup does not work anymore after creating the ...
0
votes
1answer
5k views

Ping 'Name or service not known' how can I clear cache

For several days now, after several reboots I still am faced with the issue of my CentOS 7 machine not being able to ping my domain. [root@ip126 ~]# ping sub.mydomain.eu ping: sub.mydomain.eu: Name ...
2
votes
1answer
217 views

nslookup awk to a file showing “answer”

I am currently running a script that uses nslookup on a bunch of hosts and then uses awk to print desired lines into a table. I am printing one line to file1 and another to file2, then using paste ...
0
votes
2answers
307 views

Using Awk to print desired lines of nslookup

I'm looking to print the name and IP that results from an nslookup so I can output them to a file. When I run an nslookup on a host, I get a result like this: Server: 10.10.10.10 Address: 10.10.10....
0
votes
0answers
248 views

connection refused ssh and dns

I cannot to ssh or nslookup to this machine vm1 that has the ip 192.168.56.2 from ferrari which has the ip 172.45.20.3. I do not know why, but I am able to ssh to the 192.168.56.2 from my host machine....
1
vote
2answers
2k views

Why does nslookup fail for DNS records set to a private address?

Setup On some networks I'm able to use nslookup to resolve a domain name that is pointed to a private ip address: @work> nslookup my192.ddns.net Server: 10.1.2.3 Address: 10.1.2.3#53 Non-...
0
votes
0answers
454 views

how to do domain ip lookup in debian

I can use a web-service to lookup the IP Address allotted to a website and then do a reverse lookup to get more info. about range of the IP Address to whom it was allocated to. But from what brief ...
1
vote
1answer
2k views

How the hostname resolution / lookup happens in Linux? [closed]

I am new to Linux and need to know how nslookup command resolves hostname? what are the configuration files that are used by nslookup command - I need to know the exhaustive list of files that are ...
1
vote
1answer
154 views

Why does ping resolve to a different address than traceroute? and lynx?

We have a managed server with centos, recently it starts showing strange behavior: root@server [/tmp]# ping www.google.com PING www.google.com (172.217.8.196) 56(84) bytes of data. 64 bytes from ...
1
vote
1answer
767 views

Resolve local host without any DNS server?

Is there any way to resolve local host without any DNS server? Below is my config # ifconfig eth4 Link encap:Ethernet HWaddr 00:50:56:9C:4D:2F inet6 addr: 2004:c0a8:5b01:1:250:56ff:...
4
votes
2answers
2k views

Universal way to check if “docker.for.mac.localhost” DNS name is resolvable?

Preface I want to write a universal shell-script which will add a proper IP address of docker host machine to /etc/hosts inside of container. You will probably advice me to put the service I want to ...
2
votes
2answers
2k views

dig / nslookup cannot resolve, but ping can

I'm experimenting with a Win10 IoT board that runs a web interface on minwinpc.local. This works fine in the browser, and also when I use ping. However, when I use dig or nslookup, I cannot get ...
1
vote
1answer
4k views

CentOS7 unable to resolve nslookup for short hostname

I tried setting up a DNS Lookup on CentOS 7 (in a Virtual Box VM), which works for FQDN on the same virtual machine as the DNS. However when I try to resolve the short hostname, it fails. I have seen ...
1
vote
2answers
139 views

Fedora VMs: nslookup works, ping does not when disconnected from Internet [closed]

I need your help in understanding why I'm facing this strange problem. So I'll get to the set up: Windows 10 laptop as a host let's call this host win10. Vmware installed on win10 two Linux VMs on ...
0
votes
1answer
352 views

DNS caching problem

I have a DNS server, where I put A record with TTL set to 0: example.host.com <some.ip.addr.one> Then I do dig example.host.com And get specified ip address. Later I change update record ...
0
votes
1answer
284 views

How to unescape semicolon output in double quoted dig/nslookup output?

When querying for a TXT DNS record that contains a semicolon (;) using both dig and nslookup version 9.8.3-P1, its output of the text record is in double quoted output format: Non-authoritative ...
1
vote
0answers
561 views

Can't ping 8.8.8.8 from router, but can ping it from LAN?

I have pfSense router with 2 WANs. I noticed, that if one WAN is down, then I can't ping 8.8.8.8 from router. Simultaneously, I am able to ping this address from within LAN, i.e. it can pass through ...
0
votes
2answers
175 views

How to force machines connected to an AP to use the local AP DNS?

I am sharing documents by running a hotspot in conjonction to dnsmasq that redirect all name queries to an IP <IP> where the documents can be found create_ap wlan0 wlan0 HereAreTheDocuments ...
1
vote
1answer
445 views

Nslookup doesn't show full info on CentOS 7 docker image

I'm using https://hub.docker.com/_/centos/ CentOS 7 docker image. I created service with 3 replicas inside cluster and i'd like to query internal docker dns. For BusyBox image nslookup works exactly ...
0
votes
1answer
92 views

Understand the nslookup output.

nslookup returns the following output on mac: www.yahoo.com -> 46.228.47.115, 46.228.47.114, 2a00:1288:110:2::4001 As I understand following IPs in DNS map to www.yahoo.com: www.yahoo.com ->...
7
votes
3answers
7k views

Resolving hostname takes 5 seconds

I've a master bind9 DNS server and 2 slave servers running on IPv4 (Debian Jessie), using /etc/bind/named.conf: listen-on-v6 { none; }; When I try to connect from different server(s) each connection ...
0
votes
1answer
259 views

Determining Domain Base Name from Nslookup Results [closed]

I am trying to search all IP addresses that connected to my server and want to find abusive servers from nslookup results. nslookup 31.204.150.10 | grep "in-addr" Some example results: 209.190.54....
2
votes
1answer
2k views

dig does not resolve unqualified domain names, but nslookup does

I have a lab set up with DNS running on a CentOS7 server (dns01.local.lab). The local.lab domain is defined in named.conf: zone "local.lab" IN { type master; file "local.lab.zone"; allow-...
1
vote
1answer
1k views

“crypto failure” error when running various commands

I'm finding that a few commands (for now dig and nslookup) that fail no matter what with the following output: 19-Jan-2016 15:01:50.219 ENGINE_by_id failed (crypto failure) 19-Jan-2016 15:01:50.219 ...
0
votes
1answer
536 views

How to use ls in nslookup on HP-UX? [closed]

I don't understand how to use the ls option in nslookup on HP-UX. It failed both interactively: > ls Using /etc/hosts on: hpux looking up FILES Trying DNS Name: ls. > set ls *** Invalid ...
1
vote
1answer
503 views

'nslookup' is not working on multiple network interfaces cards in linux

I am having two NICs eth0 and eth1 for my Linux VM out of which one is in public and other in private network. When I am using nslookup for same by hostname its giving following error: ** server can'...
3
votes
2answers
5k views

Retrieve IPv6 address of website using terminal

Both the nslookup and host commands return IPv4 addresses only. How can i retrieve the IPv6 address of a website using the terminal? (I have googled around, unfortunately I couldn't find anything ...
2
votes
3answers
285 views

How to see the actual nameservers of a domain instead of the “nsrecords”

A domain has nameservers and ns records. These should not, but can theoretically be different. There are multiple ways to see the ns records of a domain: dig: ➜ ~ dig +short NS stackoverflow.com ...
0
votes
1answer
170 views

dig domain replay SOA

I have a domain and when I use dig jeeja.biz it just gives me my server ip address. ;; ANSWER SECTION: jeeja.biz. 13914 IN A 209.15.212.171 But when I use the same command on another ...
0
votes
3answers
86 views

Can't identify IP addresses

I got several interesting :) e-mails from IP addresses where I can't identify country and owner (internet provider), it's by example 10.180.221.97 10.220.113.130 10.52.135.39 I tried several IP ...
-1
votes
2answers
94 views

OpenDNS automatic diagnostics

I've contacted OpenDNS support because advertising is not filtered on this site http://www.backpackerboard.co.nz/ They asked me to read these manual instructions OpenDNS Diagnostic Tool: What to ...
1
vote
1answer
621 views

any option to ignore a dns server ip from /etc/resolv.conf when doing nslookup?

We have a list of dns server IPs in /etc/resolv.conf. When doing nslookup for a particular scenario we would like to ingore the second entry below, so that naming resolution occurs via other 3 DNS ...
0
votes
3answers
3k views

DNS Issue in ubuntu 14.04

I am facing DNS resolving issue sometimes in my Ubuntu 14.04.2 LTS trusty. I have configured my system with network manager to work with static IP assignment. I have also tried by changing DNS server ...
36
votes
2answers
44k views

dig vs nslookup

Why do the commands dig and nslookup sometimes print different results? ~$ dig facebook.com ; <<>> DiG 9.9.2-P1 <<>> facebook.com ;; global options: +cmd ;; Got answer: ;; -&...