% 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 '2403:e200::/32'

% No abuse contact registered for 2403:e200::/32

inet6num:       2403:e200::/32
netname:        SCTV-VN
descr:          SaiGon Tourist Cable Television
descr:          31 -33 Dinh Cong Trang str, Tan Dinh Ward, Dist 1. HCMC
country:        VN
admin-c:        NHV3-AP
tech-c:         CHH14-AP
status:         ALLOCATED PORTABLE
remarks:        For spamming matters, mail to vinh.nh@sctv.com.vn
mnt-by:         MAINT-VN-VNNIC
mnt-lower:      MAINT-VN-VNNIC
mnt-routes:     MAINT-VN-VNNIC
last-modified:  2010-08-11T22:25:07Z
source:         APNIC

person:         Chau Hoang Huy
nic-hdl:        CHH14-AP
e-mail:         huy.ch@sctv.com.vn
address:        SaigonTourist Cable Television Company (SCTV)
address:        31-33 Dinh Cong Trang Str, Dist 1, HCMC
phone:          +84-838-205605
fax-no:         +84-838-205705
country:        VN
mnt-by:         maint-vn-vnnic
last-modified:  2009-02-06T08:44:45Z
source:         APNIC

person:         Nguyen Hoang Vinh
nic-hdl:        NHV3-AP
e-mail:         vinh.nh@sctv.com.vn
address:        SaigonTourist Cable Television Company (SCTV)
address:        31-33 Dinh Cong Trang Str, Dist 1, HCMC
phone:          +84-838-205605
fax-no:         +84-838-205705
country:        VN
mnt-by:         maint-vn-vnnic
last-modified:  2009-02-06T08:40:43Z
source:         APNIC

% Information related to '2403:e200::/32AS45543'

route6:         2403:e200::/32
descr:          SCTV-VN
origin:         AS45543
mnt-by:         MAINT-VN-VNNIC
last-modified:  2022-04-14T09:53:14Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.25 (WHOIS-AU3)

Search for
IP address lookups			Miscellaneous queries
-l	1st level less specific		-i	Inverse attributes	None admin-c admin-c,tech-c,zone-c author cross-mnt cross-nfy local-as mbrs-by-ref member-of mnt-by mnt-lower mnt-nfy mnt-routes notify nserver origin person referral-by rev-srv sub-dom tech-c upd-to zone-c
-L	All less specific		-T	Object types	All as-block as-set aut-num domain filter-set inet-rtr inet6num inetnum irt key-cert mntner peering-set person role route route-set rtr-set
-m	1st level more specific
-M	All more specific		Query hints Include "AS" in front of an AS number. Example: AS4808 Include "-t" (template only) or "-v" (template and description) in front of an object name to view the template Example: -t inetnum
-x	Exact match only
-d	Associated reverse domain