% 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 '123.136.96.0 - 123.136.127.255'

% Abuse contact for '123.136.96.0 - 123.136.127.255' is 'abuse@u.com.my'

inetnum:        123.136.96.0 - 123.136.127.255
netname:        UMOBILE-MY
descr:          U Mobile Sdn Bhd
descr:          3G Mobile Operator
descr:          Kuala Lumpur, Malaysia
country:        MY
org:            ORG-UMSB1-AP
admin-c:        UA1006-AP
tech-c:         UA1006-AP
abuse-c:        AU196-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-MY-UMOBILE
mnt-routes:     MAINT-MY-UMOBILE
mnt-irt:        IRT-UMOBILE-MY
last-modified:  2021-03-31T10:50:21Z
geoloc:         3.1422 101.7106
language:       en
source:         APNIC

irt:            IRT-UMOBILE-MY
address:        Lot 11.01, Level 11, East Wing
address:        Berjaya Times Square
address:        1, Jalan Imbi
address:        55100 Kuala Lumpur, Malaysia
e-mail:         ip.admin@u.com.my
abuse-mailbox:  abuse@u.com.my
admin-c:        WL1006-AP
admin-c:        CT1486-AP
tech-c:         WL1006-AP
tech-c:         CT1486-AP
auth:           # Filtered
remarks:        abuse@u.com.my was validated on 2024-11-13
remarks:        ip.admin@u.com.my was validated on 2024-12-04
mnt-by:         MAINT-MY-UMOBILE
last-modified:  2024-12-04T02:21:51Z
source:         APNIC

organisation:   ORG-UMSB1-AP
org-name:       U Mobile Sdn Bhd
org-type:       LIR
country:        MY
address:        Lot 11.01, Level 11, East Wing
address:        Berjaya Times Square
address:        1, Jalan Imbi, 55100 Kuala Lumpur, Malaysia
phone:          +60-3-2117-9888
fax-no:         +60-3-2144-8895
e-mail:         calvin.tan@u.com.my
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-15T12:55:16Z
source:         APNIC

role:           ABUSE UMOBILEMY
country:        ZZ
address:        Lot 11.01, Level 11, East Wing
address:        Berjaya Times Square
address:        1, Jalan Imbi
address:        55100 Kuala Lumpur, Malaysia
phone:          +000000000
e-mail:         ip.admin@u.com.my
admin-c:        WL1006-AP
admin-c:        CT1486-AP
tech-c:         WL1006-AP
tech-c:         CT1486-AP
nic-hdl:        AU196-AP
remarks:        Generated from irt object IRT-UMOBILE-MY
remarks:        abuse@u.com.my was validated on 2024-11-13
remarks:        ip.admin@u.com.my was validated on 2024-12-04
abuse-mailbox:  abuse@u.com.my
mnt-by:         APNIC-ABUSE
last-modified:  2024-12-04T02:22:02Z
source:         APNIC

role:           U Mobile IP Administrators
address:        Level 11.01, Level 11, East Wing, Berjaya Times Square,
address:        1, Jalan Imbi,
                55100 Kuala Lumpur
country:        MY
phone:          +603-21179888
fax-no:         +603-21448895
e-mail:         ip.admin@u.com.my
remarks:        ip.admin@u.com.my
admin-c:        WL1006-AP
admin-c:        CT1486-AP
tech-c:         WL1006-AP
tech-c:         CT1486-AP
nic-hdl:        UA1006-AP
mnt-by:         MAINT-MY-UMOBILE
last-modified:  2018-12-18T03:40:49Z
source:         APNIC

% Information related to '123.136.112.0/24AS38466'

route:          123.136.112.0/24
origin:         AS38466
descr:          U Mobile Sdn Bhd
                Lot 11.01, Level 11, East Wing
                Berjaya Times Square
                1, Jalan Imbi, 55100 Kuala Lumpur, Malaysia
mnt-by:         MAINT-MY-UMOBILE
last-modified:  2020-06-23T06:28:46Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-AU4)