Whois

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to '2403:5a00::/32'

% No abuse contact registered for 2403:5a00::/32

inet6num:       2403:5a00::/32
netname:        CNA-JPNIC-JP-20100708
descr:          Japan Network Information Center
country:        JP
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
remarks:        JPNIC Allocation Block
remarks:        Authoritative information regarding assignments and
remarks:        allocations made from within this block can also be
remarks:        queried at whois.nic.ad.jp. To obtain an English
remarks:        output query whois -h whois.nic.ad.jp x.x.x.x/e
mnt-by:         MAINT-JPNIC
mnt-lower:      MAINT-JPNIC
status:         ALLOCATED PORTABLE
last-modified:  2010-07-23T05:00:01Z
source:         APNIC

% Information related to '2403:5a00:fff0::/48'

inet6num:       2403:5a00:fff0::/48
netname:        TRZNETWORK
descr:          Techno-Research Zone(3Institutes&1School)
country:        JP
admin-c:        JP00117481
tech-c:         JP00117481
last-modified:  2015-04-29T04:11:03Z
remarks:        This information has been partially mirrored by APNIC from
remarks:        JPNIC. To obtain more specific information, please use the
remarks:        JPNIC WHOIS Gateway at
remarks:        http://www.nic.ad.jp/en/db/whois/en-gateway.html or
remarks:        whois.nic.ad.jp for WHOIS client. (The WHOIS client
remarks:        defaults to Japanese output, use the /e switch for English
remarks:        output)
source:         JPNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-UK2)