% 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 '45.124.40.0 - 45.124.43.255'

% Abuse contact for '45.124.40.0 - 45.124.43.255' is 'abuse@oracleemaildelivery.com'

inetnum:        45.124.40.0 - 45.124.43.255
netname:        CERNER-AU
descr:          CERNER CORPORATION PTY LIMITED
country:        AU
org:            ORG-CCPL1-AP
admin-c:        CCPL9-AP
tech-c:         CCPL9-AP
abuse-c:        AC1957-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:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNER-AU
mnt-routes:     MAINT-CERNER-AU
mnt-irt:        IRT-CERNER-AU
last-modified:  2020-07-07T19:52:05Z
source:         APNIC

irt:            IRT-CERNER-AU
address:        Level 14, 1 Pacific Hwy, Sydney NSW 2060
e-mail:         domain-contact_ww_grp@oracle.com
abuse-mailbox:  abuse@oracleemaildelivery.com
admin-c:        CCPL9-AP
tech-c:         CCPL9-AP
auth:           # Filtered
remarks:        abuse@oracleemaildelivery.com is invalid
remarks:        domain-contact_ww_grp@oracle.com was validated on 2026-01-30
mnt-by:         MAINT-CERNER-AU
last-modified:  2026-01-30T02:56:47Z
source:         APNIC

organisation:   ORG-CCPL1-AP
org-name:       CERNER CORPORATION PTY LIMITED
org-type:       LIR
country:        AU
address:        4 Julius Avenue
phone:          +61730561148
fax-no:         +61730561101
e-mail:         DL_CTS_ENTERPRISE_SECURITY_CSIRT@cerner.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:07Z
source:         APNIC

role:           ABUSE CERNERAU
country:        ZZ
address:        Level 14, 1 Pacific Hwy, Sydney NSW 2060
phone:          +000000000
e-mail:         domain-contact_ww_grp@oracle.com
admin-c:        CCPL9-AP
tech-c:         CCPL9-AP
nic-hdl:        AC1957-AP
remarks:        Generated from irt object IRT-CERNER-AU
remarks:        abuse@oracleemaildelivery.com is invalid
remarks:        domain-contact_ww_grp@oracle.com was validated on 2026-01-30
abuse-mailbox:  abuse@oracleemaildelivery.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-30T02:57:29Z
source:         APNIC

role:           CERNER CORPORATION PTY LIMITED administrator
address:        Level 14, 1 Pacific Hwy, Sydney NSW 2060
country:        AU
phone:          +61730561148
fax-no:         +61730561148
e-mail:         DL_CTS_ENTERPRISE_SECURITY_CSIRT@cerner.com
admin-c:        CCPL9-AP
tech-c:         CCPL9-AP
nic-hdl:        CCPL9-AP
mnt-by:         MAINT-CERNER-AU
last-modified:  2017-03-21T03:31:16Z
source:         APNIC

% Information related to '45.124.41.0/24AS42382'

route:          45.124.41.0/24
origin:         AS42382
descr:          CERNER CORPORATION PTY LIMITED
                Level 14
                1 Pacific Hwy
mnt-by:         MAINT-CERNER-AU
last-modified:  2019-04-29T14:08:04Z
source:         APNIC

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