ホスト名からIPアドレスを調べる方法 (Linux)
提供：あわ自由帳
nslookupコマンド
www.yahoo.co.jpのIPアドレスを調べてみます。
正引き
[root@host3 ~]# nslookup www.yahoo.co.jp Server: 127.0.0.1 Address: 127.0.0.1#53 Non-authoritative answer: www.yahoo.co.jp canonical name = www.g.yahoo.co.jp. Name: www.g.yahoo.co.jp Address: 183.79.139.228
digコマンド
www.google.co.jpのIPアドレスを調べてみます。
正引き
[root@host3 ~]# dig www.google.co.jp ; <<>> DiG 9.9.4-RedHat-9.9.4-14.el7 <<>> www.google.co.jp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43422 ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 7, ADDITIONAL: 14 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;www.google.co.jp. IN A ;; ANSWER SECTION: www.google.co.jp. 299 IN A 173.194.126.239 www.google.co.jp. 299 IN A 173.194.126.247 www.google.co.jp. 299 IN A 173.194.126.248 www.google.co.jp. 299 IN A 173.194.126.255 ;; AUTHORITY SECTION: jp. 14383 IN NS b.dns.jp. jp. 14383 IN NS f.dns.jp. jp. 14383 IN NS a.dns.jp. jp. 14383 IN NS g.dns.jp. jp. 14383 IN NS d.dns.jp. jp. 14383 IN NS e.dns.jp. jp. 14383 IN NS c.dns.jp. ;; ADDITIONAL SECTION: a.dns.jp. 164020 IN A 203.119.1.1 a.dns.jp. 164020 IN AAAA 2001:dc4::1 b.dns.jp. 164020 IN A 202.12.30.131 b.dns.jp. 164020 IN AAAA 2001:dc2::1 c.dns.jp. 164020 IN A 156.154.100.5 c.dns.jp. 164020 IN AAAA 2001:502:ad09::5 d.dns.jp. 164020 IN A 210.138.175.244 d.dns.jp. 164020 IN AAAA 2001:240::53 e.dns.jp. 164020 IN A 192.50.43.53 e.dns.jp. 164020 IN AAAA 2001:200:c000::35 f.dns.jp. 164020 IN A 150.100.6.8 f.dns.jp. 164020 IN AAAA 2001:2f8:0:100::153 g.dns.jp. 164020 IN A 203.119.40.1 ;; Query time: 43 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: 土 8月 30 11:34:00 JST 2014 ;; MSG SIZE rcvd: 505
