whoisコマンド

Linuxの仕組み

　whoisコマンドでドメイン名を指定することで、ドメインの管理者に関する情報を取得できる。詳細はここを参照。
ドメイン名を指定した場合は、以下のように情報が表示される。

[root@new-host ~]# whois jp
[Querying whois.internic.net]
[Redirected to whois.iana.org]
[Querying whois.iana.org]
[whois.iana.org]
% IANA WHOIS server
% for more information on IANA, visit http://www.iana.org
% This query returned 1 object

domain:       JP

organisation: Japan Registry Services Co., Ltd.
address:      Chiyoda First Bldg. East 13F,
address:      3-8-1 Nishi-Kanda
address:      Chiyoda-ku Tokyo 101-0065
address:      Japan

contact:      administrative
name:         Koki Higashida
organisation: Japan Registry Services Co., Ltd.
address:      Chiyoda First Bldg. East 13F,
address:      3-8-1 Nishi-Kanda
address:      Chiyoda-ku Tokyo 101-0065
address:      Japan
phone:        +81 3 5215 8451
fax-no:       +81 3 5215 8452
e-mail:       higashida@jprs.co.jp

contact:      technical
name:         Susumu Sano
organisation: Japan Registry Services Co., Ltd.
address:      Chiyoda First Bldg. East 13F,
address:      3-8-1 Nishi-Kanda
address:      Chiyoda-ku Tokyo 101-0065
address:      Japan
phone:        +81 3 5215 8480
fax-no:       +81 3 5215 8452
e-mail:       tech-admin@jprs.jp

nserver:      A.DNS.JP 2001:dc4:0:0:0:0:0:1 203.119.1.1
nserver:      B.DNS.JP 2001:dc2:0:0:0:0:0:1 202.12.30.131
nserver:      C.DNS.JP 156.154.100.5 2001:502:ad09:0:0:0:0:5
nserver:      D.DNS.JP 2001:240:0:0:0:0:0:53 210.138.175.244
nserver:      E.DNS.JP 192.50.43.53 2001:200:c000:0:0:0:0:35
nserver:      F.DNS.JP 150.100.6.8 2001:2f8:0:100:0:0:0:153
nserver:      G.DNS.JP 203.119.40.1
ds-rdata:     15685 8 1 BB1FEA6AA10DBB52A7DF091DAE3AF22C28F65B4B
ds-rdata:     15685 8 2 170E77FF24DD8D8A1FDE99AEB4C93A85434C9376A3C198FBBFE12D0F807A14E9

whois:        whois.jprs.jp

status:       ACTIVE
remarks:      Registration information: http://jprs.jp/

created:      1986-08-05
changed:      2012-10-15
source:       IANA

ホスト名を指定した場合は、以下のようにエラーとなる。

[root@new-host ~]# whois d.hatena.ne.jp
[Querying whois.jprs.jp]
[whois.jprs.jp]
[ JPRS database provides information on network administration. Its use is    ]
[ restricted to network administration purposes. For further information,     ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e'     ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'.                 ]

No match!!

With JPRS WHOIS, you can query the following domain name information
sponsored by JPRS.
    - All of registered JP domain name
    - gTLD domain name of which sponsoring registrar is JPRS
Detail: http://jprs.jp/about/dom-search/jprs-whois/ (only in Japanese)

For IP address information, please refer to the following WHOIS servers:
    - JPNIC WHOIS (whois.nic.ad.jp)
    - APNIC WHOIS (whois.apnic.net)
    - ARIN WHOIS (whois.arin.net)
    - RIPE WHOIS (whois.ripe.net)
    - LACNIC WHOIS (whois.lacnic.net)
    - AfriNIC WHOIS (whois.afrinic.net)