pages:howtos:diagnose:how-to-diagnose-dns-with-dig
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Table of Contents
How to Diagnose DNS and RDNS with DIG
Sources:
DIG Basic Usage
dig -t ANY @a.ns14.net nanoscopic.de
- dig: calling the command dig
- -t ANY: specifying the query type
- @a.ns14.net: specifying the DNS server to query
- nanoscopic.de: the name to query for
Find Authoritative DNS Server
dig -t SOA nanoscopic.de
; <<>> DiG 9.18.26 <<>> -t SOA nanoscopic.de ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22729 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1424 ;; QUESTION SECTION: ;nanoscopic.de. IN SOA ;; ANSWER SECTION: nanoscopic.de. 3600 IN SOA a.ns14.net. domains.wiretrip.de. 2024031401 43200 7200 1209600 3600 ;; Query time: 26 msec ;; SERVER: 192.168.1.1#53(192.168.1.1) (UDP) ;; WHEN: Mon May 06 17:50:07 CEST 2024 ;; MSG SIZE rcvd: 105
The authoritative DNS server for nanoscopic.de is a.ns14.net.
Query the authoritative DNS server (or a specific DNS server) for current data
To get current DNS data, use @<HOSTNAME_OF_AUTHORITATIVE_DNS_SERVER>.
IPv4
dig @a.ns14.net -t A nanoscopic.de
; <<>> DiG 9.18.26 <<>> @a.ns14.net -t A nanoscopic.de ; (2 servers found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32234 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1232 ;; QUESTION SECTION: ;nanoscopic.de. IN A ;; ANSWER SECTION: nanoscopic.de. 3600 IN A 159.69.16.204 ;; Query time: 16 msec ;; SERVER: 62.116.159.231#53(a.ns14.net) (UDP) ;; WHEN: Mon May 06 17:56:47 CEST 2024 ;; MSG SIZE rcvd: 58
IPv6
dig @a.ns14.net -t AAAA nanoscopic.de
; <<>> DiG 9.18.26 <<>> @a.ns14.net -t AAAA nanoscopic.de ; (2 servers found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21488 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1232 ;; QUESTION SECTION: ;nanoscopic.de. IN AAAA ;; ANSWER SECTION: nanoscopic.de. 3600 IN AAAA 2a01:4f8:c0c:fa5c::1 ;; Query time: 16 msec ;; SERVER: 62.116.159.231#53(a.ns14.net) (UDP) ;; WHEN: Mon May 06 17:58:31 CEST 2024 ;; MSG SIZE rcvd: 70
Determine the DNS Server holding a RDNS (PTR) Record
How to interpret DIG output
~~DISCUSSION~~
pages/howtos/diagnose/how-to-diagnose-dns-with-dig.1715017082.txt.gz · Last modified: 2024/05/06 17:38 by mischerh