% APNIC found the following authoritative answer from: whois.apnic.net

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

% Information related to '203.216.0.0 - 203.216.127.255'

% Abuse contact for '203.216.0.0 - 203.216.127.255' is 'abuse@gol.com'

inetnum:        203.216.0.0 - 203.216.127.255
netname:        RMNI-JP
descr:          Rakuten Mobile Network, Inc.
country:        JP
org:            ORG-RMNI1-AP
admin-c:        RMNI1-AP
tech-c:         RMNI1-AP
abuse-c:        AG1214-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-RMNI-JP
mnt-routes:     MAINT-RMNI-JP
mnt-irt:        IRT-GOL-JP1
last-modified:  2025-09-04T21:22:03Z
source:         APNIC

irt:            IRT-GOL-JP1
address:        1-14-1 Tamagawa, Setagaya-ku, Tokyo
e-mail:         abuse@gol.com
abuse-mailbox:  abuse@gol.com
admin-c:        RMNI1-AP
tech-c:         RMNI1-AP
auth:           # Filtered
remarks:        abuse@gol.com was validated on 2025-10-07
mnt-by:         MAINT-RMNI-JP
last-modified:  2025-11-18T00:33:36Z
source:         APNIC

organisation:   ORG-RMNI1-AP
org-name:       Rakuten Mobile, Inc.
org-type:       LIR
country:        JP
address:        1-14-1 Tamagawa, Setagaya-ku
phone:          +81-050-5817-1360
e-mail:         rmi-as138384@mail.rakuten.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:40Z
source:         APNIC

role:           ABUSE GOLJP1
country:        ZZ
address:        1-14-1 Tamagawa, Setagaya-ku, Tokyo
phone:          +000000000
e-mail:         abuse@gol.com
admin-c:        RMNI1-AP
tech-c:         RMNI1-AP
nic-hdl:        AG1214-AP
remarks:        Generated from irt object IRT-GOL-JP1
remarks:        abuse@gol.com was validated on 2025-10-07
abuse-mailbox:  abuse@gol.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-07T02:33:47Z
source:         APNIC

role:           Rakuten Mobile Network Inc administrator
address:        1-14-1 Tamagawa, Setagaya-ku, Tokyo
country:        JP
phone:          +81-050-5817-1360
fax-no:         +81-050-5817-1360
e-mail:         rmi-as138384@mail.rakuten.com
admin-c:        RMNI1-AP
tech-c:         RMNI1-AP
nic-hdl:        RMNI1-AP
mnt-by:         MAINT-RMNI-JP
last-modified:  2021-02-14T23:12:21Z
source:         APNIC

% Information related to '203.216.0.0/17AS23720'

route:          203.216.0.0/17
origin:         AS23720
descr:          Rakuten Mobile Network Inc.
                Rakuten Crimson House 8F
                1-14-1 Tamagawa
                Setagaya-ku
                Route for Rakuten Communications K.K. Services
mnt-by:         MAINT-RMNI-JP
last-modified:  2023-04-25T07:21:48Z
source:         APNIC

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