% 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 '2402:7500::/32'

% Abuse contact for '2402:7500::/32' is 'katchan@taiwanmobile.com'

inet6num:       2402:7500::/32
netname:        TAIWANMOBILE-NET
descr:          Taiwan Mobile Co., Ltd.
descr:          6Fl., No. 172-1, Sec. 2, Ji-Long.Rd.
descr:          Taipei Taiwan 106
country:        TW
admin-c:        MC872-AP
tech-c:         JW907-AP
abuse-c:        AT939-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-TW-TWNIC
mnt-lower:      MAINT-TW-TWNIC
mnt-routes:     MAINT-TW-TWNIC
mnt-irt:        IRT-TAIWANMOBILE-TW
last-modified:  2023-11-30T04:11:25Z
source:         APNIC

irt:            IRT-TAIWANMOBILE-TW
address:        Taiwan Mobile Co., Ltd.
address:        6Fl., No. 172-1, Sec. 2, Ji-Long.Rd.
address:        Taipei Taiwan 106
e-mail:         katchan@taiwanmobile.com
abuse-mailbox:  katchan@taiwanmobile.com
admin-c:        MC872-AP
tech-c:         JW907-AP
auth:           # Filtered
mnt-by:         MAINT-TW-TWNIC
last-modified:  2024-02-01T22:23:39Z
source:         APNIC

role:           ABUSE TWNICAP
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
country:        ZZ
phone:          +000000000
e-mail:         hostmaster@twnic.net.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
nic-hdl:        AT939-AP
remarks:        Generated from irt object IRT-TWNIC-AP
remarks:        hostmaster@twnic.net.tw was validated on 2021-11-04
abuse-mailbox:  hostmaster@twnic.net.tw
mnt-by:         APNIC-ABUSE
last-modified:  2021-11-04T01:00:32Z
source:         APNIC

person:         Johnny Wang
nic-hdl:        JW907-AP
e-mail:         dns-admin@taiwanmobile.com
address:        3Fl., No. 206, Sec. 2, Duen-Hua S.Rd.,
address:        Taipei, 106, R.O.C
phone:          +886-9-3515-0657
phone:          +886-2-6639-0508
fax-no:         +886-2-6639-0511
country:        TW
mnt-by:         MAINT-TW-TWNIC
last-modified:  2009-01-14T03:51:49Z
source:         APNIC

person:         Mark Chuang
nic-hdl:        MC872-AP
e-mail:         markchuang@taiwanmobile.com
address:        3Fl., No. 206, Sec. 2, Duen-Hua S.Rd.,
address:        Taipei, 106, R.O.C
phone:          +886-9-22440617
fax-no:         +886-2-6639-0511
country:        TW
mnt-by:         MAINT-TW-TWNIC
last-modified:  2008-09-04T07:29:24Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.25 (WHOIS-AU2)

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