nslookup - IPアドレスからホスト情報を調べるには

[Linux] => [Linuxコマンド(J〜Q)]

nslookupを使用することでネームサーバへ問合せを行うことができます。
IPアドレスからホスト名を調べたり、ホスト名からIPアドレスや逆引きを調べる際には重宝します。
このコマンドは将来digまたはhostコマンドに取って代わられるようです。

[正引き]
nslookup ksknet.net
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
Server: 218.219.203.56
Address: 218.219.203.56#53

Name: ksknet.net
Address: 218.219.203.56

[逆引き]
nslookup 218.219.203.56.
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
Server: 218.219.203.56
Address: 218.219.203.56#53

Non-authoritative answer:
56.203.219.218.in-addr.arpa name = l203056.ppp.asahi-net.or.jp.

Authoritative answers can be found from:
203.219.218.in-addr.arpa nameserver = dns1.asahi-net.or.jp.
203.219.218.in-addr.arpa nameserver = crusader.asahi-net.or.jp.
dns1.asahi-net.or.jp internet address = 202.224.32.19
crusader.asahi-net.or.jp internet address = 202.224.39.8

[ネームサーバを指定して問合せ]
ネームサーバを指定して問合せを行うには、続けて問合せるネームサーバを指定すればよい。

nslookup ksknet.net dns1.m-t.com
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
Server: dns1.m-t.com
Address: 218.219.71.251#53

Non-authoritative answer:
Name: ksknet.net
Address: 218.219.203.56

[root@server root]# nslookup ksknet.net server.ksknet.net
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
Server: server.ksknet.net
Address: 218.219.203.56#53

Name: ksknet.net
Address: 218.219.203.56

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