% 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 '103.52.1.0 - 103.52.1.255'

% Abuse contact for '103.52.1.0 - 103.52.1.255' is 'alerts@service.nsw.gov.au'

inetnum:        103.52.1.0 - 103.52.1.255
netname:        SERVICENSW-AU
descr:          SERVICE NSW DIVISION
descr:          Level 2,
descr:          66 Harrington St, Sydney NSW 2000
country:        AU
org:            ORG-SND1-AP
admin-c:        SNA49-AP
tech-c:         SNA49-AP
abuse-c:        AS2431-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-SERVICENSW-AU
mnt-irt:        IRT-SERVICENSW-AU
last-modified:  2020-06-30T23:32:39Z
source:         APNIC

irt:            IRT-SERVICENSW-AU
address:        Level 18 , 2-24 Rawson Place, Sydney NSW 2000
e-mail:         alerts@service.nsw.gov.au
abuse-mailbox:  alerts@service.nsw.gov.au
admin-c:        SNA49-AP
tech-c:         SNA49-AP
auth:           # Filtered
remarks:        alerts@service.nsw.gov.au is invalid
mnt-by:         MAINT-SERVICENSW-AU
last-modified:  2025-11-18T00:28:35Z
source:         APNIC

organisation:   ORG-SND1-AP
org-name:       SERVICE NSW DIVISION
org-type:       LIR
country:        AU
address:        McKell Building
address:        Level 18
address:        2-24 Rawson Place
phone:          +61280592000
e-mail:         snsw.sd.l3infrasupport@service.nsw.gov.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:16:18Z
source:         APNIC

role:           ABUSE SERVICENSWAU
country:        ZZ
address:        Level 18 , 2-24 Rawson Place, Sydney NSW 2000
phone:          +000000000
e-mail:         alerts@service.nsw.gov.au
admin-c:        SNA49-AP
tech-c:         SNA49-AP
nic-hdl:        AS2431-AP
remarks:        Generated from irt object IRT-SERVICENSW-AU
remarks:        alerts@service.nsw.gov.au is invalid
abuse-mailbox:  alerts@service.nsw.gov.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-04T20:38:24Z
source:         APNIC

role:           Service NSW administrator
address:        Level 2,, 66 Harrington St,, Sydney NSW 2000
country:        AU
phone:          +61298877547
fax-no:         +61298877547
e-mail:         ben.mcmullen@service.nsw.gov.au
admin-c:        SNA49-AP
tech-c:         SNA49-AP
nic-hdl:        SNA49-AP
mnt-by:         MAINT-SERVICENSW-AU
last-modified:  2014-01-22T00:00:50Z
source:         APNIC

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