% 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 '45.126.96.0 - 45.126.99.255'

% Abuse contact for '45.126.96.0 - 45.126.99.255' is 'hm-changed@vnnic.vn'

inetnum:        45.126.96.0 - 45.126.99.255
netname:        VIETNAMOBILE-VN
descr:          6th floor, No7 Chua Boc, Dong Da, Ha Noi
admin-c:        HMH14-AP
tech-c:         NVM3-AP
remarks:        send spam and abuse report to hai.h@vietnamobile.com.vn
country:        VN
mnt-by:         MAINT-VN-VNNIC
mnt-lower:      MAINT-VN-VNNIC
mnt-irt:        IRT-VNNIC-AP
status:         ALLOCATED PORTABLE
last-modified:  2016-11-25T03:27:24Z
source:         APNIC

irt:            IRT-VNNIC-AP
address:        Ha Noi, VietNam
phone:          +84-24-35564944
fax-no:         +84-24-37821462
e-mail:         hm-changed@vnnic.vn
abuse-mailbox:  hm-changed@vnnic.vn
admin-c:        NTTT1-AP
tech-c:         NTTT1-AP
auth:           # Filtered
mnt-by:         MAINT-VN-VNNIC
last-modified:  2026-04-21T02:07:47Z
source:         APNIC

person:         Hoang Minh Hai
address:        VIETNAMOBILE-VN
country:        VN
phone:          +84-24-35730123
e-mail:         hai.h@vietnamobile.com.vn
nic-hdl:        HMH14-AP
mnt-by:         MAINT-VN-VNNIC
last-modified:  2017-11-12T07:43:02Z
source:         APNIC

person:         Nghiem Van Minh
address:        VIETNAMOBILE-VN
country:        VN
phone:          +84-24-35730123
e-mail:         minh.nv@vietnamobile.com.vn
nic-hdl:        NVM3-AP
mnt-by:         MAINT-VN-VNNIC
last-modified:  2017-11-12T07:45:29Z
source:         APNIC

% Information related to '45.126.97.0/24AS38247'

route:          45.126.97.0/24
descr:          VIETNAMOBILE-VN
origin:         AS38247
mnt-by:         MAINT-VN-VNNIC
last-modified:  2025-05-15T08:56:34Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU5)