% 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 '128.250.0.0 - 128.250.255.255'

% Abuse contact for '128.250.0.0 - 128.250.255.255' is 'it-security@unimelb.edu.au'

inetnum:        128.250.0.0 - 128.250.255.255
netname:        UNIMELB
descr:          The University of Melbourne
country:        AU
org:            ORG-UOM3-AP
admin-c:        TUOM2-AP
tech-c:         TUOM2-AP
abuse-c:        AU218-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:        --------------------------------------------------------
notify:         abuse@unimelb.edu.au
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-UNIMELB
mnt-routes:     MAINT-AU-UNIMELB
mnt-irt:        IRT-UNIMELB-AU
last-modified:  2020-09-24T00:23:14Z
source:         APNIC

irt:            IRT-UNIMELB-AU
address:        Information Technology Services
address:        The University of Melbourne
address:        Victoria 3010
address:        Australia
e-mail:         it-security@unimelb.edu.au
abuse-mailbox:  it-security@unimelb.edu.au
admin-c:        MM620-AP
tech-c:         MM620-AP
auth:           # Filtered
remarks:        it-security@unimelb.edu.au was validated on 2024-12-17
mnt-by:         MAINT-AU-UNIMELB
last-modified:  2024-12-17T22:00:30Z
source:         APNIC

organisation:   ORG-UOM3-AP
org-name:       University of Melbourne
org-type:       LIR
country:        AU
address:        Networks and Telephony
address:        Level 3
address:        11 Barry St
phone:          +61-3-90355511
e-mail:         service-centre@unimelb.edu.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:59Z
source:         APNIC

role:           ABUSE UNIMELBAU
country:        ZZ
address:        Information Technology Services
address:        The University of Melbourne
address:        Victoria 3010
address:        Australia
phone:          +000000000
e-mail:         it-security@unimelb.edu.au
admin-c:        MM620-AP
tech-c:         MM620-AP
nic-hdl:        AU218-AP
remarks:        Generated from irt object IRT-UNIMELB-AU
remarks:        it-security@unimelb.edu.au was validated on 2024-12-17
abuse-mailbox:  it-security@unimelb.edu.au
mnt-by:         APNIC-ABUSE
last-modified:  2024-12-17T22:01:19Z
source:         APNIC

role:           The University of Melbourne Administrator
address:        Information Technology Services
address:        The University of Melbourne
address:        Victoria 3010
country:        AU
phone:          +61 3 8344 7477
e-mail:         mcm@unimelb.edu.au
admin-c:        MM620-AP
tech-c:         MM620-AP
nic-hdl:        TUOM2-AP
mnt-by:         MAINT-AU-UNIMELB
last-modified:  2014-01-30T00:51:55Z
source:         APNIC

% Information related to '128.250.0.0/24AS10148'

route:          128.250.0.0/24
origin:         AS10148
descr:          University of Melbourne
                Networks and Telephony
                Level 3
                11 Barry St
mnt-by:         MAINT-AU-UNIMELB
last-modified:  2021-01-19T00:15:45Z
source:         APNIC

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