% 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 '203.26.112.0 - 203.26.112.255'

% Abuse contact for '203.26.112.0 - 203.26.112.255' is 'abuse@optiscan.com'

inetnum:        203.26.112.0 - 203.26.112.255
netname:        OPTISCAN-AU
descr:          Optiscan Pty. Ltd.
descr:          16 Miles St
descr:          Mulgrave
descr:          VIC 3170
country:        AU
org:            ORG-OPL27-AP
admin-c:        JW266-AP
tech-c:         JW266-AP
abuse-c:        AO288-AP
status:         ASSIGNED PORTABLE
mnt-by:         APNIC-HM
mnt-routes:     MAINT-AU-OPTISCAN
mnt-irt:        IRT-OPTISCAN-NON-AU
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:        --------------------------------------------------------
last-modified:  2021-08-03T07:04:08Z
source:         APNIC

irt:            IRT-OPTISCAN-NON-AU
address:        16 Miles Street
address:        Mulgrave
address:        Victoria
address:        3170
e-mail:         abuse@optiscan.com
abuse-mailbox:  abuse@optiscan.com
admin-c:        JW266-AP
tech-c:         JW266-AP
auth:           # Filtered
remarks:        abuse@optiscan.com was validated on 2025-09-25
mnt-by:         MAINT-AU-OPTISCAN
last-modified:  2025-11-18T00:27:55Z
source:         APNIC

organisation:   ORG-OPL27-AP
org-name:       Optiscan Pty Ltd
org-type:       LIR
country:        AU
address:        16 Miles St
phone:          +61-3-9538-3333
fax-no:         +61-3-9562-7742
e-mail:         info@optiscan.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:32Z
source:         APNIC

role:           ABUSE OPTISCANNONAU
country:        ZZ
address:        16 Miles Street
address:        Mulgrave
address:        Victoria
address:        3170
phone:          +000000000
e-mail:         abuse@optiscan.com
admin-c:        JW266-AP
tech-c:         JW266-AP
nic-hdl:        AO288-AP
remarks:        Generated from irt object IRT-OPTISCAN-NON-AU
remarks:        abuse@optiscan.com was validated on 2025-09-25
abuse-mailbox:  abuse@optiscan.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-25T21:33:59Z
source:         APNIC

person:         John Wymant
address:        16 Miles St
address:        Mulgrave
address:        Victoria
address:        3170
country:        AU
phone:          +613-9538-3333
e-mail:         jwymant@optiscan.com
nic-hdl:        JW266-AP
mnt-by:         MAINT-AU-OPTISCAN
last-modified:  2021-08-01T06:46:52Z
source:         APNIC

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