{"id":5975,"date":"2018-02-09T11:08:27","date_gmt":"2018-02-09T11:08:27","guid":{"rendered":"https:\/\/cpanelplesk.com\/wp62\/?p=5975"},"modified":"2021-01-30T08:11:54","modified_gmt":"2021-01-30T08:11:54","slug":"nslookup-commands-troubleshoot-dns","status":"publish","type":"post","link":"https:\/\/cpanelplesk.com\/wp62\/nslookup-commands-troubleshoot-dns\/","title":{"rendered":"Nslookup Commands to Troubleshoot DNS"},"content":{"rendered":"

nslookup (stands for name server lookup) is a network utility program used to test and troubleshoot DNS servers. As appears from its name, it gets name server information for domains by querying the DNS.<\/p>\n

In this article, we will see the detailed use of nslookup command.
\nnslookup can be run in two modes: Interactive and Non-Interactive.
\nThe Interactive mode is used to query DNS<\/a>-Server about various domains and hosts. Non-Interactive mode is used to query about information of a domain or host.<\/p>\n

<\/div>\n

1. Find out \u201cA\u201d record of Domain<\/h3>\n
\n
nslookup yahoo.com\r\nServer: 8.8.8.8\r\nAddress: 8.8.8.8#53\r\n\r\nNon-authoritative answer:\r\nName: yahoo.com\r\nAddress: 98.139.180.180\r\nName: yahoo.com\r\nAddress: 206.190.39.42\r\nName: yahoo.com\r\nAddress: 98.138.252.38<\/pre>\n<\/div>\n
<\/div>\n
2. Reverse Domain Lookup<\/h3>\n
\n
# nslookup 98.138.252.38\r\nServer: 8.8.8.8\r\nAddress: 8.8.8.8#53\r\n\r\nNon-authoritative answer:\r\n38.252.138.98.in-addr.arpa name = media-router-fp1.prod.media.vip.ne1.yahoo.com.\r\n\r\nAuthoritative answers can be found from:<\/pre>\n<\/div>\n
<\/div>\n
3. Specific Domain Lookup.<\/h3>\n
\n
# nslookup media-router-fp1.prod.media.vip.ne1.yahoo.com.\r\nServer: 8.8.8.8\r\nAddress: 8.8.8.8#53\r\n\r\nNon-authoritative answer:\r\nName: media-router-fp1.prod.media.vip.ne1.yahoo.com\r\nAddress: 98.138.252.38<\/pre>\n<\/div>\n
<\/div>\n
4. To Query MX record.<\/h3>\n
\n
# nslookup -query=mx www.yahoo.com\r\nServer: 8.8.8.8\r\nAddress: 8.8.8.8#53\r\n\r\nNon-authoritative answer:\r\nwww.yahoo.com canonical name = atsv2-fp.wg1.b.yahoo.com.\r\n\r\nAuthoritative answers can be found from:\r\nwg1.b.yahoo.com\r\norigin = yf1.yahoo.com\r\nmail addr = hostmaster.yahoo-inc.com\r\nserial = 1518173576\r\nrefresh = 30\r\nretry = 30\r\nexpire = 86400\r\nminimum = 300<\/pre>\n<\/div>\n
<\/div>\n
5. To query NS record.<\/h3>\n
\n
# nslookup -query=ns www.yahoo.com\r\nServer: 8.8.8.8\r\nAddress: 8.8.8.8#53\r\n\r\nNon-authoritative answer:\r\nwww.yahoo.com canonical name = atsv2-fp.wg1.b.yahoo.com.\r\n\r\nAuthoritative answers can be found from:\r\nwg1.b.yahoo.com\r\norigin = yf1.yahoo.com\r\nmail addr = hostmaster.yahoo-inc.com\r\nserial = 1518173776\r\nrefresh = 30\r\nretry = 30\r\nexpire = 86400\r\nminimum = 300<\/pre>\n<\/div>\n
<\/div>\n
6. To query SOA record.<\/h3>\n
\n
# nslookup -type=soa www.yahoo.com\r\nServer: 8.8.8.8\r\nAddress: 8.8.8.8#53\r\n\r\nNon-authoritative answer:\r\nwww.yahoo.com canonical name = atsv2-fp.wg1.b.yahoo.com.\r\n\r\nAuthoritative answers can be found from:\r\nwg1.b.yahoo.com\r\norigin = yf1.yahoo.com\r\nmail addr = hostmaster.yahoo-inc.com\r\nserial = 1518173847\r\nrefresh = 30\r\nretry = 30\r\nexpire = 86400\r\nminimum = 300<\/pre>\n<\/div>\n
<\/div>\n
7. To query all Available DNS records.<\/h3>\n
\n
#nslookup -query=any yahoo.com\r\n;; Truncated, retrying in TCP mode.\r\nServer: 8.8.8.8\r\nAddress: 8.8.8.8#53\r\n\r\nNon-authoritative answer:\r\nyahoo.com rdata_257 = 0 issue \"digicert.com\"\r\nyahoo.com rdata_257 = 0 iodef \"mailto:security@yahoo.com\"\r\nyahoo.com rdata_257 = 0 issue \"symantec.com\"\r\nyahoo.com\r\norigin = ns1.yahoo.com\r\nmail addr = hostmaster.yahoo-inc.com\r\nserial = 2018020926\r\nrefresh = 3600\r\nretry = 300\r\nexpire = 1814400\r\nminimum = 600\r\nName: yahoo.com\r\nAddress: 98.139.180.180\r\nName: yahoo.com\r\nAddress: 206.190.39.42\r\nName: yahoo.com\r\nAddress: 98.138.252.38\r\nyahoo.com has AAAA address 2001:4998:44:204::100d\r\nyahoo.com has AAAA address 2001:4998:c:e33::53\r\nyahoo.com has AAAA address 2001:4998:58:2201::73\r\nyahoo.com mail exchanger = 1 mta6.am0.yahoodns.net.\r\nyahoo.com mail exchanger = 1 mta5.am0.yahoodns.net.\r\nyahoo.com mail exchanger = 1 mta7.am0.yahoodns.net.\r\nyahoo.com nameserver = ns3.yahoo.com.\r\nyahoo.com nameserver = ns1.yahoo.com.\r\nyahoo.com nameserver = ns5.yahoo.com.\r\nyahoo.com nameserver = ns2.yahoo.com.\r\nyahoo.com nameserver = ns4.yahoo.com.\r\nyahoo.com text = \"v=spf1 redirect=_spf.mail.yahoo.com\"\r\n\r\nAuthoritative answers can be found from:<\/pre>\n<\/div>\n
<\/div>\n
8. Enable Debug mode<\/h3>\n
To enable Debug Mode \u2018set debug\u2019 will return you verbose information like TTL:<\/p>\n
\n
# nslookup -debug yahoo.com\r\nServer: 8.8.8.8\r\nAddress: 8.8.8.8#53\r\n\r\n------------\r\nQUESTIONS:\r\nyahoo.com, type = A, class = IN\r\nANSWERS:\r\n-> yahoo.com\r\ninternet address = 98.138.252.38\r\nttl = 1384\r\n-> yahoo.com\r\ninternet address = 98.139.180.180\r\nttl = 1384\r\n-> yahoo.com\r\ninternet address = 206.190.39.42\r\nttl = 1384\r\nAUTHORITY RECORDS:\r\nADDITIONAL RECORDS:\r\n------------\r\nNon-authoritative answer:\r\nName: yahoo.com\r\nAddress: 98.138.252.38\r\nName: yahoo.com\r\nAddress: 98.139.180.180\r\nName: yahoo.com\r\nAddress: 206.190.39.42<\/pre>\n<\/div>\n
So in this article, we have covered almost all nslookup commands which may help you to search (DNS) Domain Name Service related information.<\/p>\n","protected":false},"excerpt":{"rendered":"
nslookup (stands for name server lookup) is a network utility program used to test and troubleshoot DNS servers. As appears from its name, it gets name server information for domains by querying the DNS. […]<\/p>\n
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