Find out the name and ip of the primary DNS server of the ru-zone?

Question

linux

How to find out the name and IP address of the ru-zone DNS server from the Linux terminal?

Answer 1

dig-ru

Answer 2

dig ru soa
;; ANSWER SECTION:
en. 345600 IN SOA a.dns.ripn.net. hostmaster.ripn.net. 4024106 86400 14400 2592000 3600
;; AUTHORITY SECTION:
en. 115948 IN NS d.dns.ripn.net.
ru. 115948 IN NS e.dns.ripn.net.
ru. 115948 IN NS a.dns.ripn.net.
ru. 115948 IN NS f.dns.ripn.net.
ru. 115948 IN NS b.dns.ripn.net.
master ns - a.dns.ripn.net
ns servers in the list

Answer 3

That's right:
First, find out the current root ones (in general, the list rarely changes, but you never know):

[email protected]:~$ host -v -t NS . 
Trying "."
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34596
;; flags: qr rd ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 13

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			190148	IN	NS	k.root-servers.net.
.			190148	IN	NS	j.root-servers.net.
.			190148	IN	NS	a.root-servers.net.
.			190148	IN	NS	h.root-servers.net.
.			190148	IN	NS	g.root-servers.net.
.			190148	IN	NS	l.root-servers.net.
.			190148	IN	NS	b.root-servers.net.
.			190148	IN	NS	i.root-servers.net.
.			190148	IN	NS	d.root-servers.net.
.			190148	IN	NS	c.root-servers.net.
.			190148	IN	NS	e.root-servers.net.
.			190148	IN	NS	m.root-servers.net.
.			190148	IN	NS	f.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	589225	IN	A	198.41.0.4
a.root-servers.net.	589225	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	335673	IN	A	192.228.79.201
b.root-servers.net.	213280	IN	AAAA	2001:500:84::b
c.root-servers.net.	463106	IN	A	192.33.4.12
c.root-servers.net.	146224	IN	AAAA	2001:500:2::c
d.root-servers.net.	463106	IN	A	199.7.91.13
d.root-servers.net.	383665	IN	AAAA	2001:500:2d::d
e.root-servers.net.	463106	IN	A	192.203.230.10
f.root-servers.net.	463106	IN	A	192.5.5.241
f.root-servers.net.	81903	IN	AAAA	2001:500:2f::f
g.root-servers.net.	463106	IN	A	192.112.36.4
h.root-servers.net.	335673	IN	A	128.63.2.53

Received 496 bytes from 127.0.1.1#53 in 4 ms

Then we ask one of them for NS records for the ru zone. :

[email protected]:~$ host -v -t NS ru. 198.41.0.4 
Trying "ru"
Using domain server:
Name: 198.41.0.4
Address: 198.41.0.4#53
Aliases: 

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40869
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 5, ADDITIONAL: 10

;; QUESTION SECTION:
;ru.				IN	NS

;; AUTHORITY SECTION:
ru.			172800	IN	NS	f.dns.ripn.net.
ru.			172800	IN	NS	e.dns.ripn.net.
ru.			172800	IN	NS	d.dns.ripn.net.
ru.			172800	IN	NS	b.dns.ripn.net.
ru.			172800	IN	NS	a.dns.ripn.net.

;; ADDITIONAL SECTION:
f.dns.ripn.net.		172800	IN	A	193.232.156.17
f.dns.ripn.net.		172800	IN	AAAA	2001:678:14:0:193:232:156:17
e.dns.ripn.net.		172800	IN	A	193.232.142.17
e.dns.ripn.net.		172800	IN	AAAA	2001:678:15:0:193:232:142:17
d.dns.ripn.net.		172800	IN	A	194.190.124.17
d.dns.ripn.net.		172800	IN	AAAA	2001:678:18:0:194:190:124:17
b.dns.ripn.net.		172800	IN	A	194.85.252.62
b.dns.ripn.net.		172800	IN	AAAA	2001:678:16:0:194:85:252:62
a.dns.ripn.net.		172800	IN	A	193.232.128.6
a.dns.ripn.net.		172800	IN	AAAA	2001:678:17:0:193:232:128:6

Received 332 bytes from 198.41.0.4#53 in 46 ms

Answer 4

in addition, it may be useful: whois ru