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

% [whois.apnic.net]
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% Information related to '103.4.232.0 - 103.4.232.255'

% Abuse contact for '103.4.232.0 - 103.4.232.255' is 'network-support@singaporetech.edu.sg'

inetnum:        103.4.232.0 - 103.4.232.255
netname:        SIT
descr:          Singapore Institute of Technology
descr:          10 Dover Drive
descr:          Singapore 138683
country:        SG
org:            ORG-SIOT1-AP
admin-c:        SIOT1-AP
tech-c:         SIOT1-AP
abuse-c:        AS2555-AP
status:         ASSIGNED 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-routes:     MAINT-SIT-SG
mnt-irt:        IRT-SIT-SG
last-modified:  2020-07-13T13:11:21Z
source:         APNIC

irt:            IRT-SIT-SG
address:        10 Dover Drive
address:        Singapore 138683
e-mail:         network-support@singaporetech.edu.sg
abuse-mailbox:  network-support@singaporetech.edu.sg
admin-c:        SIOT1-AP
tech-c:         SIOT1-AP
auth:           # Filtered
remarks:        network-support@singaporetech.edu.sg was validated on 2025-09-25
mnt-by:         MAINT-SIT-SG
last-modified:  2025-11-18T00:27:09Z
source:         APNIC

organisation:   ORG-SIOT1-AP
org-name:       Singapore Institute of Technology
org-type:       LIR
country:        SG
address:        10 Dover Drive
phone:          +65-65921180
e-mail:         network-support@singaporetech.edu.sg
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2024-07-03T13:06:31Z
source:         APNIC

role:           ABUSE SITSG
country:        ZZ
address:        10 Dover Drive
address:        Singapore 138683
phone:          +000000000
e-mail:         network-support@singaporetech.edu.sg
admin-c:        SIOT1-AP
tech-c:         SIOT1-AP
nic-hdl:        AS2555-AP
remarks:        Generated from irt object IRT-SIT-SG
remarks:        network-support@singaporetech.edu.sg was validated on 2025-09-25
abuse-mailbox:  network-support@singaporetech.edu.sg
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-25T00:41:56Z
source:         APNIC

role:           SINGAPORE INSTITUTE OF TECHNOLOGY - network admini
address:        10 Dover Drive
address:        Singapore 138683
country:        SG
phone:          +6565921180
e-mail:         sysadmin@singaporetech.edu.sg
admin-c:        SIOT1-AP
tech-c:         SIOT1-AP
nic-hdl:        SIOT1-AP
mnt-by:         MAINT-SIT-SG
last-modified:  2016-08-01T04:40:02Z
source:         APNIC

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