Nslookup Command Examples To Check DNS Records
Find out the domain IP address / A record
[root@web ~]# nslookup arstech.net
Server: 213.136.95.11
Address: 213.136.95.11#53
Non-authoritative answer:
Name: arstech.net
Address: 213.136.71.197
Find out the domain MX record
[root@web ~]# nslookup -query=mx arstech.net
Server: 213.136.95.11
Address: 213.136.95.11#53
Non-authoritative answer:
arstech.net mail exchanger = 10 mail.arstech.net.
Authoritative answers can be found from:
mail.arstech.net internet address = 213.136.71.197
Find out the domain NS record
[root@web ~]# nslookup -type=ns google.com
Server: 213.136.95.11
Address: 213.136.95.11#53
Non-authoritative answer:
google.com nameserver = ns1.google.com.
google.com nameserver = ns3.google.com.
google.com nameserver = ns4.google.com.
google.com nameserver = ns2.google.com.
Authoritative answers can be found from:
ns1.google.com internet address = 216.239.32.10
ns3.google.com internet address = 216.239.36.10
ns4.google.com internet address = 216.239.38.10
ns2.google.com internet address = 216.239.34.10
Find out the domain TXT (SPF) record
[root@web ~]# nslookup -type=txt google.com
Server: 213.136.95.11
Address: 213.136.95.11#53
Non-authoritative answer:
google.com text = "v=spf1 include:_spf.google.com ~all"
Find out the domain CNAME record
[root@web ~]# nslookup -type=cname google.com
Server: 213.136.95.11
Address: 213.136.95.11#53
Non-authoritative answer:
*** Can't find google.com: No answer
Authoritative answers can be found from:
google.com
origin = ns1.google.com
mail addr = dns-admin.google.com
serial = 101716444
refresh = 7200
retry = 1800
expire = 1209600
minimum = 300
Find out the domain SOA record
[root@web ~]# nslookup -type=soa google.com
Server: 213.136.95.11
Address: 213.136.95.11#53
Non-authoritative answer:
google.com
origin = ns1.google.com
mail addr = dns-admin.google.com
serial = 4294967295
refresh = 7200
retry = 1800
expire = 1209600
minimum = 300
Authoritative answers can be found from:
google.com nameserver = ns2.google.com.
google.com nameserver = ns1.google.com.
google.com nameserver = ns4.google.com.
google.com nameserver = ns3.google.com.
ns2.google.com internet address = 216.239.34.10
ns1.google.com internet address = 216.239.32.10
ns4.google.com internet address = 216.239.38.10
ns3.google.com internet address = 216.239.36.10
Find out the domain reverse DNS (PTR) record
[root@web ~]# nslookup 173.194.116.128
Server: 213.136.95.11
Address: 213.136.95.11#53
Non-authoritative answer:
128.116.194.173.in-addr.arpa name = fra02s28-in-f0.1e100.net.
Find out ALL domain records
[root@web ~]# nslookup -type=any yahoo.com
Server: 213.136.95.11
Address: 213.136.95.11#53
Non-authoritative answer:
yahoo.com
origin = ns1.yahoo.com
mail addr = hostmaster.yahoo-inc.com
serial = 2015082714
refresh = 3600
retry = 300
expire = 1814400
minimum = 600
Name: yahoo.com
Address: 98.138.253.109
Name: yahoo.com
Address: 98.139.183.24
Name: yahoo.com
Address: 206.190.36.45
yahoo.com mail exchanger = 1 mta5.am0.yahoodns.net.
yahoo.com mail exchanger = 1 mta7.am0.yahoodns.net.
yahoo.com mail exchanger = 1 mta6.am0.yahoodns.net.
yahoo.com nameserver = ns4.yahoo.com.
yahoo.com nameserver = ns1.yahoo.com.
yahoo.com nameserver = ns3.yahoo.com.
yahoo.com nameserver = ns6.yahoo.com.
yahoo.com nameserver = ns5.yahoo.com.
yahoo.com nameserver = ns2.yahoo.com.
yahoo.com text = "v=spf1 redirect=_spf.mail.yahoo.com"
yahoo.com has AAAA address 2001:4998:58:c02::a9
yahoo.com has AAAA address 2001:4998:44:204::a7
yahoo.com has AAAA address 2001:4998:c:a06::2:4008
Authoritative answers can be found from:
ns1.yahoo.com internet address = 68.180.131.16
ns1.yahoo.com has AAAA address 2001:4998:130::1001
ns2.yahoo.com internet address = 68.142.255.16
Find out particular nameserver IP address / record
[root@web ~]# nslookup arstech.net ns1.contabo.net
Server: ns1.contabo.net
Address: 2a02:c200:0:10::882:1#53
Name: arstech.net
Address: 213.136.71.197
Find out detailed information using DEBUG mode
[root@web ~]# nslookup -debug arstech.net
Server: 213.136.95.11
Address: 213.136.95.11#53
------------
QUESTIONS:
arstech.net, type = A, class = IN
ANSWERS:
-> arstech.net
internet address = 213.136.71.197
ttl = 47111
AUTHORITY RECORDS:
ADDITIONAL RECORDS:
------------
Non-authoritative answer:
Name: arstech.net
Address: 213.136.71.197
