% 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 '161.139.0.0 - 161.139.255.255'

% Abuse contact for '161.139.0.0 - 161.139.255.255' is 'utmcert@utm.my'

inetnum:        161.139.0.0 - 161.139.255.255
netname:        UTM-MY
descr:          Universiti Teknologi Malaysia
country:        MY
org:            ORG-UTM4-AP
admin-c:        UTMA1-AP
tech-c:         UTMA1-AP
abuse-c:        AU235-AP
remarks:        -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+
remarks:        This object can only be updated by APNIC hostmasters.
remarks:        To update this object, please contact APNIC
remarks:        hostmasters and include your organization's account
remarks:        name in the subject line.
remarks:        -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-UTM-MY
mnt-routes:     MAINT-UTM-MY
mnt-irt:        IRT-UTM-MY
last-modified:  2023-08-31T23:29:25Z
source:         APNIC

irt:            IRT-UTM-MY
address:        Center for ICT, Universiti Teknologi Malaysia,, 81310, Skudai, Johor Bahru,, Johor Bahru Johor 81310
e-mail:         utmcert@utm.my
abuse-mailbox:  utmcert@utm.my
admin-c:        UTMA1-AP
tech-c:         UTMA1-AP
auth:           # Filtered
remarks:        utmcert@utm.my is invalid
mnt-by:         MAINT-UTM-MY
last-modified:  2023-08-01T18:59:50Z
source:         APNIC

organisation:   ORG-UTM4-AP
org-name:       Universiti Teknologi Malaysia
org-type:       LIR
country:        MY
address:        Center for ICT
address:        Universiti Teknologi Malaysia,
address:        81310, Skudai, Johor Bahru,
phone:          +607 5532470
fax-no:         +607 5566164
e-mail:         utmcert@utm.my
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:16:04Z
source:         APNIC

role:           ABUSE UTMMY
address:        Center for ICT, Universiti Teknologi Malaysia,, 81310, Skudai, Johor Bahru,, Johor Bahru Johor 81310
country:        ZZ
phone:          +000000000
e-mail:         utmcert@utm.my
admin-c:        UTMA1-AP
tech-c:         UTMA1-AP
nic-hdl:        AU235-AP
remarks:        Generated from irt object IRT-UTM-MY
remarks:        utmcert@utm.my is invalid
abuse-mailbox:  utmcert@utm.my
mnt-by:         APNIC-ABUSE
last-modified:  2023-08-01T19:01:15Z
source:         APNIC

role:           Universiti Teknologi Malaysia administrator
address:        Center for ICT, Universiti Teknologi Malaysia,, 81310, Skudai, Johor Bahru,, Johor Bahru Johor 81310
country:        MY
phone:          +607 5532470
fax-no:         +607 5532470
e-mail:         utmcert@utm.my
admin-c:        UTMA1-AP
tech-c:         UTMA1-AP
nic-hdl:        UTMA1-AP
mnt-by:         MAINT-UTM-MY
last-modified:  2012-10-19T03:01:34Z
source:         APNIC

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