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

% [whois.apnic.net]
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% Information related to '150.129.40.0 - 150.129.40.255'

% Abuse contact for '150.129.40.0 - 150.129.40.255' is 'abuse@worldbackbone.com'

inetnum:        150.129.40.0 - 150.129.40.255
netname:        SPEED-MY
descr:          Menara AIMS, Changkat Raja Chulan, 50200 Kuala Lumpur, Malaysia
country:        MY
admin-c:        SM2429-AP
tech-c:         SM2429-AP
abuse-c:        SM2429-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-SPEED-MY
mnt-irt:        IRT-SPEED-MY
last-modified:  2025-03-17T07:29:34Z
source:         APNIC

irt:            IRT-SPEED-MY
address:        Menara AIMS, Changkat Raja Chulan, 50200 Kuala Lumpur, Malaysia
e-mail:         abuse@worldbackbone.com
abuse-mailbox:  abuse@worldbackbone.com
admin-c:        SM2429-AP
tech-c:         SM2429-AP
auth:           # Filtered
remarks:        abuse@worldbackbone.com is invalid
mnt-by:         MAINT-SPEED-MY
last-modified:  2026-06-17T13:07:32Z
source:         APNIC

role:           SPEED MY
address:        abuse@worldbackbone.com
country:        MY
phone:          +601168213612
e-mail:         abuse@hknetbroadband.com
admin-c:        AA2388-AP
tech-c:         AA2388-AP
nic-hdl:        SM2429-AP
mnt-by:         MAINT-SPEED-MY
last-modified:  2026-05-07T09:09:05Z
source:         APNIC

% Information related to '150.129.40.0/24AS62610'

route:          150.129.40.0/24
descr:          Menara AIMS, Changkat Raja Chulan, 50200 Kuala Lumpur, Malaysia
country:        MY
mnt-by:         MAINT-SPEED-MY
origin:         AS62610
last-modified:  2025-03-04T02:27:48Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU4)