% 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 'OA3-AP'

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

person:         IP Administrator
nic-hdl:        IA65-AP
e-mail:         ipadmin@optus.net.au
address:        c/- SingTel Optus Pty Ltd
address:        101 Miller Street
address:        North Sydney NSW 2060
address:        Australia
phone:          +61 2 9342 7800
fax-no:         +61 2 9342 7100
country:        AU
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2008-09-04T07:42:25Z
source:         APNIC

person:         NOC CNS
nic-hdl:        NC8-AP
e-mail:         noc@optus.net.au
address:        c/- SingTel Optus Pty Ltd
address:        101 Miller Street
address:        North Sydney NSW 2060
address:        AUSTRALIA
phone:          +61 2 9342 7800
fax-no:         +61 2 9342 7100
country:        AU
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2008-09-04T07:29:14Z
source:         APNIC

person:         Optus Hostmaster
nic-hdl:        OH23-AP
e-mail:         hostmaster@optus.net.au
address:        c/- SingTel Optus Pty Ltd
address:        101 Miller Street
address:        North Sydney NSW 2060
address:        Australia
phone:          +61 2 9342 7800
fax-no:         +61 2 9342 7100
country:        AU
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2008-09-04T07:42:25Z
source:         APNIC

% Information related to 'OA3-AP'

person:         Obi Agam
address:        Jl. Rajamoili No.15 i, Besusu Barat, Palu Timur
address:        Kota Palu, Sulawesi Tengah - Indonesia
country:        ID
phone:          +62-451-456420
e-mail:         obiagam@jnetwork.net.id
nic-hdl:        OA3-AP
mnt-by:         MAINT-ID-JNETWORK
last-modified:  2022-01-26T06:01:53Z
source:         IDNIC

% This query was served by the APNIC Whois Service version 1.88.25 (WHOIS-AU3)

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