Difference between revisions of "Dig"
From Linuxintro
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* When I wanted gsuite to manage my mail domain, I had to prove that I own this domain's DNS. To do this, I had to add a TXT record to DNS that contained a string for google to verify I had inserted it. Now I did not know if it had worked, but with dig I could find out: | * When I wanted gsuite to manage my mail domain, I had to prove that I own this domain's DNS. To do this, I had to add a TXT record to DNS that contained a string for google to verify I had inserted it. Now I did not know if it had worked, but with dig I could find out: | ||
| − | |||
| − | |||
| − | ; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> staerk.de TXT | + | root@mail:~# dig staerk.de TXT |
| − | ;; global options: +cmd | + | |
| − | ;; Got answer: | + | ; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> staerk.de TXT |
| − | ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10656 | + | ;; global options: +cmd |
| − | ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1 | + | ;; Got answer: |
| − | + | ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10656 | |
| − | ;; OPT PSEUDOSECTION: | + | ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1 |
| − | ; EDNS: version: 0, flags:; udp: 1480 | + | |
| − | ;; QUESTION SECTION: | + | ;; OPT PSEUDOSECTION: |
| − | ;staerk.de. IN TXT | + | ; EDNS: version: 0, flags:; udp: 1480 |
| − | + | ;; QUESTION SECTION: | |
| − | ;; ANSWER SECTION: | + | ;staerk.de. IN TXT |
| − | staerk.de. 3600 IN TXT "google-site-verification=XtcUMZPfCdJHB3JDQM_fiI0BBWW_sQiyYhCmH6Sok18" | + | |
| − | + | ;; ANSWER SECTION: | |
| − | ;; AUTHORITY SECTION: | + | staerk.de. 3600 IN TXT "google-site-verification=XtcUMZPfCdJHB3JDQM_fiI0BBWW_sQiyYhCmH6Sok18" |
| − | staerk.de. 3600 IN NS ns1.first-ns.de. | + | |
| − | staerk.de. 3600 IN NS robotns2.second-ns.de. | + | ;; AUTHORITY SECTION: |
| + | staerk.de. 3600 IN NS ns1.first-ns.de. | ||
| + | staerk.de. 3600 IN NS robotns2.second-ns.de. | ||
;; Query time: 235 msec | ;; Query time: 235 msec | ||
Revision as of 11:00, 14 June 2019
The command dig allows you to query a name server for IP addresses like this:
# dig www.linuxintro.org ; <<>> DiG 9.7.3-P1 <<>> www.linuxintro.org ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 884 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;www.linuxintro.org. IN A ;; ANSWER SECTION: www.linuxintro.org. 14400 IN A 92.51.132.237 ;; Query time: 67 msec ;; SERVER: 192.168.0.1#53(192.168.0.1) ;; WHEN: Sat Jul 2 14:34:22 2011 ;; MSG SIZE rcvd: 52
In this example we see the IP address of www.linuxintro.org is 92.51.132.237.
The syntax of a dig call is
dig @dnsserver domain type
for example
- query the 192.168.0.1 for the IP address of the hostname bartholomeus
dig @192.168.0.1 bartholomeus
- query for the mail record (MX) of staerk.de
root@mail:~# dig staerk.de MX ; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> staerk.de MX ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55597 ;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 2, ADDITIONAL: 6 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1480 ;; QUESTION SECTION: ;staerk.de. IN MX ;; ANSWER SECTION: staerk.de. 3536 IN MX 1 aspmx.l.google.com.staerk.de. staerk.de. 3536 IN MX 5 alt2.aspmx.l.google.com.staerk.de. staerk.de. 3536 IN MX 5 alt1.aspmx.l.google.com.staerk.de. staerk.de. 3536 IN MX 10 alt4.aspmx.l.google.com.staerk.de. staerk.de. 3536 IN MX 10 alt3.aspmx.l.google.com.staerk.de.
- When I wanted gsuite to manage my mail domain, I had to prove that I own this domain's DNS. To do this, I had to add a TXT record to DNS that contained a string for google to verify I had inserted it. Now I did not know if it had worked, but with dig I could find out:
root@mail:~# dig staerk.de TXT ; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> staerk.de TXT ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10656 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1480 ;; QUESTION SECTION: ;staerk.de. IN TXT ;; ANSWER SECTION: staerk.de. 3600 IN TXT "google-site-verification=XtcUMZPfCdJHB3JDQM_fiI0BBWW_sQiyYhCmH6Sok18" ;; AUTHORITY SECTION: staerk.de. 3600 IN NS ns1.first-ns.de. staerk.de. 3600 IN NS robotns2.second-ns.de. ;; Query time: 235 msec ;; SERVER: 80.237.128.56#53(80.237.128.56) ;; WHEN: Fri Jun 14 10:56:26 UTC 2019 ;; MSG SIZE rcvd: 179
