Questions tagged [dig]
The dig tag has no usage guidance.
55
questions
2
votes
4answers
112 views
Read file and print out ip-address to another file
I have big file that holds something like 40000 rows of domain names.
I would like to read that file and use dig (or something else) to look up the IP addresses of the domain names in the DNS, and ...
2
votes
1answer
47 views
dnsmasq behaving strangely: dig returns result for dns lookup, yet ping reports “host not found”
Since my router does not resolve hostnames of LAN devices, I setup my server to act as a DNS using DNSMASQ.
DNS Server Specs
----------------
OS: Ubuntu Server
LAN IP: 192.168.1.4
I have a ...
0
votes
4answers
87 views
Script to query a list of domains for MX records then query the answers for the IP addresses?
I need to check mail servers' IP addresses from a list of domains to see if they match a certain IP address. Specifically:
Build a list of the domains I want to query
Dig the MX record(s) of each ...
5
votes
1answer
82 views
Going all-in on DNSSEC
I have been doing an effort to go full on DNSSEC on my system with the following setup:
dnscrypt-proxy installed, up and running on 127.0.0.1 with require_dnssec = true
systemd-resolved running, with ...
4
votes
2answers
372 views
Unable to run DNS queries when response is bigger than 512 Bytes and truncated
Situation:
Linux machine running in Azure
looking for a public domain that returns 112 results
the packet response size is 1905 bytes
Case 1:
interrogating google DNS 8.8.8.8 - it returns un-...
1
vote
3answers
164 views
Extract A record and query time from dig output
I am having the following output when executing a dig command :
dig @1.1.1.1 google.com +noall +answer +stats
; <<>> DiG 9.11.4-P1 <<>> @1.1.1.1 google.com +noall +answer +...
0
votes
1answer
60 views
How to get dig without bind
Is there a way of installing dig or nslookup without BIND (preferably without compilation)? BIND is known to be a huge security hole, and all I need is the ability to resolve domain names to their A ...
0
votes
0answers
34 views
Can reach local DNS, but remote not
I'm getting nowhere with the following problem: When using my local ISPs DNS server at 192.168.0.1 (for example putting it into /etc/resolv.conf or using it directly with dig google.com @192.168.0.1) ...
0
votes
0answers
20 views
How to query Docker nameservers?
When I try to update my Ubuntu 18.04,I encounter problems
Err:13 https://get.docker.com/ubuntu docker InRelease ...
0
votes
1answer
404 views
Dig: connection timed out; no servers could be reached. But ping works?
When I try to run the dig command against either my servers IP or nameserver I get an error:
root@kali2:/etc# dig q-type=soa @192.168.100.10
; <<>> DiG 9.11.4-P2-3-Debian <<>&...
0
votes
2answers
89 views
Using grep and logical operators for pattern matching within shell script
Im trying to develop a script that finds a specific pattern in the output of the dig command running against a list of domains. To do this I'm using grep but having difficulty implementing this using ...
0
votes
1answer
158 views
Why does dig utility hang indefinitely even with timeout specified?
I'm using dig utility to find public IP address.
The command I used is:
dig +short myip.opendns.com @resolver1.opendns.com
but I had problem since on some other computers it took so long, so I ...
0
votes
1answer
103 views
Using socat, how to send to and receive from a public DNS server?
In a file called "query.bin" we have stored the data that is transmitted to a public DNS server by the following command.
dig +notcp hello.com @8.8.8.8
How can query.bin now be sent to 8.8.8.8 again ...
0
votes
0answers
773 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 +...
2
votes
2answers
257 views
How shall I understand the output of `dig`?
How shall I understand the output of dig?
A DNS server stores a database of resource records.
Does dig return the resource records in the database of some DNS server? If yes, which DNS server's ...
asked Feb 11 '19 at 21:30
StackExchange for All
67.1k100 gold badges321 silver badges608 bronze badges
1
vote
1answer
115 views
dnsmasq running in namespace can't take queries from within namespace
I've set up a default dnsmasq.conf with essentially no modifications except:
listen-address=192.168.42.2
interface=veth1 # Also tried without
server=8.8.8.8
And my /etc/hosts looks like this:
127.0....
3
votes
1answer
1k views
resolve my ip with dig returns empty string
When trying to resolve my public IP address I get an ampty string
ip=$(dig +short myip.opendns.com @resolver1.opendns.com)
0
votes
1answer
967 views
Why doesn't dig myip.opendns.com @resolver1.opendns.com use sshuttle's proxy?
I am using the great technique from How can I get my external IP address in a shell script? to find my public IP address:
dig +short myip.opendns.com @resolver1.opendns.com
I'm also using sshuttle ...
3
votes
2answers
6k views
how to extract just the IP address from a DNS query
I'd like to know how to extract just the IP address from a DNS / dig query. The query I'm running looks like this:
lab-1:/var/# dig +answer smtp.mydomain.net +short
smtp.ggs.mydomain.net
10.11....
12
votes
4answers
31k views
Why doesn't systemd-resolved use my local DNS server?
I'm using a local BIND9 server to host some local dns records. When trying to dig for a local domain name I can't find it if I don't explicitly tell dig to use my local BIND9 server.
user@heimdal:~$ ...
1
vote
1answer
85 views
Open connections with unresolvable domain
Output of sudo watch lsof -i and sudo watch netstat -tp show ESTABLISHED connections with unresolvable domain (e.g., host, dig woldn't resolve, trying to access domain directly via URL from firefox ...
1
vote
1answer
1k 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:...
1
vote
0answers
502 views
bind fails to resolve FQDN from root hints file
I'm trying to re-lean how to set up a bind named server after many years. I set up a simulated local LAN and ISP using GNS3. I have an internal and external view for DNS. no errors in zone ...
2
votes
2answers
3k 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 ...
0
votes
1answer
495 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
326 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 ...
10
votes
2answers
8k views
How does dig find my WAN-IP-adress? What is “myip.opendns.com” doing?
I needed to automatically get my own WAN-IP-adress from my router. I found this question and, among others, a solution with dig was proposed:
dig +short myip.opendns.com @resolver1.opendns.com
It ...
2
votes
2answers
249 views
How does root(DNS) server could answer about twitter.com?
Recently wondered how root server returns information about domains it doesn't have information about.
I thought that root dns server, for example, a.root-servers.net, doesn't perform recursive ...
0
votes
2answers
200 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
0answers
138 views
Fast check if custom TLD is resolvable in
In our mesh network we announce some own top level domains, each community announces its own TLD.
I want to check via bash if the top level domains .ffhh, .ffki and .fffl,... can be resolved. I ...
1
vote
3answers
3k views
Unable to install bind-utils in RHEL 7.3, dependency error on bind-license
I'm trying to install dig through bind-utils on an AWS EC2 RHEL 7.3 instance, but I get a dependency error.
Requires: bind-license = 32:9.9.4-37.el7
but
Installed: 32:bind-license-9.9.4-38.el7_3....
17
votes
1answer
34k views
Is `dig ptr` a valid way to perform a reverse DNS query?
I know we can use dig -x to perform a reverse DNS query.
I have a textbook in front of me that says that both dig ptr and dig -x are valid syntax.
dig -x definitely works for me, but I'm not getting ...
1
vote
1answer
617 views
Why is dig query time slower on one computer vs another in the same LAN?
To make a long story short, I setup DNS forwarding/caching using dnsmasq built into my router (EdgeRouter).
My test command is simple:
dig www.example.com
On one computer, which happens to be a ...
0
votes
1answer
708 views
ip domain name/FQDN using dig
When I do a dig on a hostname, in our network, it doesn't not give me the IP address, but when I add the domain name it does work or when I do a dig +search
Why is the domain name a prerequisite for ...
0
votes
1answer
2k views
Bulk Reverse DNS query with DIG
Alright,
I want to do a bulk reverse DNS query to a specific nameserver.
Currently, after searching here and Google, I got it to work for 1 entry at the time with the following command:
dig @...
1
vote
2answers
3k views
dig -x www.google.com
I'm trying to learn more about the dig command and have come across the -x option which is meant for reverse lookup, i.e. you give an IP address and get back a domain name.
I tried doing dig -x www....
6
votes
2answers
4k views
Why does dig -6 google.com not work for me? [closed]
Result of dig -6 google.com:
; <<>> DiG 9.8.3-P1 <<>> -6 google.com
;; global options: +cmd
;; connection timed out; no servers could be reached
What does it means if dig -4 ...
2
votes
2answers
461 views
How to dig from root to bottom?
I'm trying to fetch DNS data without any local or ISP resolvers using the DIG tool.
For example I try google.nl
I start at a rootserver (d.root-servers.net):
dig @199.7.91.13 google.nl
Then I take ...
4
votes
1answer
2k views
How do I figure out where wrong local dns results are coming from?
I'm running mint Mate 17.2.
When I use dig, for a certain specific domain name, the resolved IP "answer" is wrong, and the answer server is 127.0.0.1.
Trying to access this domain from my local ...
1
vote
1answer
956 views
Bash print current line, line's output, and linebreak to file
I've got a txt of a bunch of domains I need to run dig +short mx on.
I've got a script set to run the command, print it to a results.txt with:
./dig_domain_mx.sh > results.txt
Downside is, I ...
3
votes
1answer
1k views
Finding out what DNS server are being used
Using dig I can query a specific DNS server for some DNS records, for instance
dig example.com A @192.168.1.1
Where in this instance 192.168.1.1 is my router's ip.
Is there a way, using dig or any ...
1
vote
1answer
380 views
How can I get my bash script to remove the first n and last n lines from a variable?
I'm making a script to preform "dig ns google.com" and cut off the all of the result except for the answers section.
So far I have:
#!/bin/bash
echo -n "Please enter the domain: "
read d
echo "You ...
3
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
2k 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 ...
1
vote
1answer
66 views
What command line tools can be used to manually perform each step of an entire network “conversation”?
I know, I know; the phrase "network conversation" is imprecise almost to the point of meaninglessness. Let's take this specific scenario: I plug in a computer to a DHCP enabled router, open a browser ...
0
votes
2answers
308 views
How to filter IPv4 IPs in bash
How do I filter IPv4 IPs from data in bash?
For example:
command:
dig www.ign.com A +short
return:
www.ign.com.edgesuite.net.
a1005.g.akamai.net.
2.20.255.80
2.20.255.78
And I want to make a ...
3
votes
2answers
7k views
Force dig to forget records
I would like to let dig always forget a DNS record.
I mean if I do dig yahoo.com then I have a record back in with ttl for 1790 seconds.
Even if I have no cache service installed, next time i do the ...
1
vote
1answer
3k views
dig is not returning all the IP-addresses of a hostname
I'm trying to get all IP-addresses of a hostname. But dig actually just returns a subset of ips assigned to a host.
For example, this hostname e.crashlytics.com is assigned to multiple cnames. Every ...
4
votes
1answer
11k views
How to enable nameserver recursion?
On Ubuntu 14.04, when I'm performing a
dig google.de
on my machine, I get a REFUSED status (reducing to relevant lines):
me@machine:~# dig google.de
;; ->>HEADER<<- opcode: QUERY, ...
0
votes
1answer
224 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 ...
