% 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 'MAINT-OPTUSCOM-AP'

mntner:         MAINT-OPTUSCOM-AP
upd-to:         ipadmin@optus.net.au
auth:           # Filtered
descr:          SingTel Optus Pty Ltd
descr:          Internet Services
descr:          Optus Macquarie Park (OCS)
descr:          1 Lyonpark Road
descr:          Macquarie Park NSW 2113
admin-c:        OA3-AP
tech-c:         OA3-AP
referral-by:    APNIC-HM
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2020-01-05T23:54:20Z
source:         APNIC

role:           OPTUS IP ADMINISTRATORS
address:        SingTel Optus Pty Ltd
address:        Optus Macquarie Park (OCS)
address:        1 Lyonpark Road
address:        Macquarie Park  NSW 2113
address:        AUSTRALIA
country:        AU
phone:          +61 2 8082 7800
fax-no:         +61 2 8082 7100
e-mail:         ipadmin@optus.net.au
remarks:        send spam/abuse reports to abuse@optus.net.au
remarks:        please use http://www.apnic.net/db/spam.html
remarks:        to identify networks before sending reports and
remarks:        always include full headers/logs.
admin-c:        NC8-AP
admin-c:        IA65-AP
tech-c:         NC8-AP
tech-c:         IA65-AP
tech-c:         OH23-AP
nic-hdl:        OA3-AP
notify:         hostmaster@optus.net.au
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2011-12-06T00:10:13Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.25 (WHOIS-AU2)

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