Questions tagged [dig]
dig is a command-line client to make queries against DNS servers, the Internet name servers.
227
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Getting different ip addresses for the same hostname
Why do I get different ip addresses for (what seems like) the same host, when resolving a CNAME and its corresponding A records?
❯ host www.github.com
www.github.com is an alias for github.com.
** ...
0
votes
0
answers
42
views
Show intermediate answer when querying DNS
My company has multiple layers of DNS before arriving at a specific node, for example:
domain1.company.com CNAME domain2.company.com
domain2.company.com CNAME ...
- 101
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vote
0
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95
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Forward DNS does not work. BIND and DIG find nothing
The company's DC is in the Oracle Cloud, and I connect it to the companies via IPSec, and foward the DNS via Domain Override in pfSense or Bind9.
I recently picked up a Dream Machine from Ubiquiti to ...
1
vote
2
answers
856
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Why isn't `nslookup` able to resolve an A record in route53, when I specifically use a nameserver from my hosted zone?
I'm trying to host a static website in s3. I have a domain registered with namecheap, and it is pointing at route53 nameservers. This part seems to be working correctly based on dig:
dig getgargoyle....
- 11
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How to make updates to BIND9 zone files to be visible for queries?
I am using BIND 9.18 for testing purpose. I create a zone which supports dynamic DNS, and I try to use nsupdate to update the domain's resource record. After 15 minutes the update is successfully ...
- 3
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2
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142
views
point CNAME Record to multiple wildcard A Records
I am trying to point my cname to my wildcard FQDN which has multiple A-Records.
Dig Output:
;; QUESTION SECTION:
;access.domain.intra. IN A
;; ANSWER SECTION:
access.domain.intra. 3600 IN ...
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1
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43
views
DNS hard to reach after reboot RHEL7
Two weeks ago, two of our four RHEL7 VMs running on same Openstack infrastructure rebooted unprompted and unnoticed. May be externally triggered.
Ever since, all services relying on DNS are unreliable ...
- 111
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247
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How to disable or fix OpenStack intercepting DNS PTR queries
I have several virtual machines with Debian/GNU Linux running on OpenStack. When resolving their internal IPv4 addresses I get some strange results:
# ip -c addr show dev eth0
2: eth0: <BROADCAST,...
- 126
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votes
1
answer
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views
detect if zone transfer with dig succeed or not via return code
I have script like this
CHARSET=ASCII dig domain.com AXFR > domain.com.zone
if [ "$?" = "0" ]; then
echo "OK"
else
echo "Something went wrong"
...
- 882
0
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0
answers
281
views
Gmail not detecting PTR record from vultr server
I have an SMTP server running on a vultr VM. I've set up the rDNS to point to my mail domain name mail.idimitrov.dev. The DNS setup points to that machine on ipv4 and ipv6 for mail.idimitrov.dev and ...
- 101
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3
answers
417
views
Google Public DNS always returning NXDOMAIN for certain SLDs
Problem: Google's Public DNS returns NXDOMAIN for certain SLDs.
Proof of problem:
dig vpn.example.com @8.8.8.8
; \<\<\>\> DiG 9.11.5-P4-5.1+deb10u8-Debian \<\<\>\> vpn....
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1
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Querying the nameserver for NS record of a domain results in a non-authoritative answer
I was wondering why name server record need to be in the zone file, because the delegation is already done by the parent zone. I came across this answer. That answer makes sense, I suppose. Then I ...
- 111
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1
answer
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How does one query the resolver name of a DNS server?
The Shodan search tool, for some DNS servers, shows a Resolver name value for what it finds on UDP port 53. For example, 80.82.117.140 shows Resolver name: server402.xenserve.com and 103.81.27.118 ...
- 180
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Can the bulk execution of "dig domain mx" on 5000 domains be considered an attack to the network?
I have a database containing a lot of invalid emails.
I want to remove all the emails whose domain does not have mx record.
So after I extracted the domain part I wrote a script to bulk check this for ...
- 155
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Why if I run the dig command on an authoritary server I don't get an authoritary asnwer?
I ran dig debian.org ns to get a list of all authoritary servers for debian.org, and when I run dig @auth.server debian.org for some of authoritary servers I get an authorithary response and for ...
