whoisコマンドで新興TLDのドメイン創設日を調べる

# yum provides \*/whois

    (snip)

jwhois-4.0-45.el7.x86_64 : Internet whois/nicname client
リポジトリー        : epel
一致          :
ファイル名    : /usr/bin/whois



whois-5.1.1-2.el7.x86_64 : Improved WHOIS client
リポジトリー        : base
一致          :
ファイル名    : /usr/bin/whois

# yum install whois

    (snip)

インストール:
  whois.x86_64 0:5.1.1-2.el7

完了しました!

# whois google.com
   Domain Name: GOOGLE.COM
   Registry Domain ID: 2138514_DOMAIN_COM-VRSN
   Registrar WHOIS Server: whois.markmonitor.com
   Registrar URL: http://www.markmonitor.com
   Updated Date: 2018-02-21T18:36:40Z
   Creation Date: 1997-09-15T04:00:00Z
   Registry Expiry Date: 2020-09-14T04:00:00Z
   Registrar: MarkMonitor Inc.
   Registrar IANA ID: 292
   Registrar Abuse Contact Email: abusecomplaints@markmonitor.com
   Registrar Abuse Contact Phone: +1.2083895740
   Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
   Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
   Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
   Domain Status: serverDeleteProhibited https://icann.org/epp#serverDeleteProhibited
   Domain Status: serverTransferProhibited https://icann.org/epp#serverTransferProhibited
   Domain Status: serverUpdateProhibited https://icann.org/epp#serverUpdateProhibited
   Name Server: NS1.GOOGLE.COM
   Name Server: NS2.GOOGLE.COM
   Name Server: NS3.GOOGLE.COM
   Name Server: NS4.GOOGLE.COM
   DNSSEC: unsigned
   URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/

# whois domains.osaka
この種のオブジェクトに対する既知の whois サーバーはありません

# whois -h whois.nic.osaka domains.osaka
Domain Name: domains.osaka
Registry Domain ID: D2403-OSAKA
Registrar WHOIS Server:
Registrar URL:
Updated Date: 2019-03-26T00:00:37Z
Creation Date: 2015-02-09T07:35:34Z
Registry Expiry Date: 2020-02-08T23:59:59Z
Registrar: Interlink Co., Ltd. (Registry)
Registrar IANA ID: 9998
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: ok https://icann.org/epp#ok
Registry Registrant ID:

    (snip)

// osaka.whois-servers.netのNameSpaceを検索すると、
# host -t ns osaka.whois-servers.net
// osaka.whois-server.netはwhois.nic.osakaのエイリアスになっている
osaka.whois-servers.net is an alias for whois.nic.osaka.
whois.nic.osaka is an alias for whois.osaka.dnrs.neustar.
whois.osaka.dnrs.neustar is an alias for whois.osaka.ash.dnrs.neustar.

# /etc/whois.conf

# whois configuration file
#
# This file can contain details of alternative whois servers to use if
# the compiled in servers are not suitable.  Each entry is a single
# text line and consists of a regular expression pattern to match and
# the whois server to be used for it, separated by blank space.
# IDN domains must use the ACE format.
#
# Eg:
# \.nz$ nz.whois-servers.net
#

# ↓追加
\.osaka$ whois.nic.osaka
\.tokyo$ whois.nic.tokyo
\.nagoya$ whois.nic.nagoya
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