% 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 '103.74.66.0 - 103.74.67.255'

% Abuse contact for '103.74.66.0 - 103.74.67.255' is 'abuse@iptelco.com.au'

inetnum:        103.74.66.0 - 103.74.67.255
netname:        AISPLTIT-AU
descr:          IP Telco
country:        AU
org:            ORG-IT2-AP
admin-c:        AISP4-AP
tech-c:         AISP4-AP
abuse-c:        AA1905-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-AISPLTIT-AU
mnt-routes:     MAINT-AISPLTIT-AU
mnt-irt:        IRT-AISPLTIT-AU
last-modified:  2023-09-10T20:57:24Z
geoloc:         -27.4582129 153.0284764
geofeed:        https://iptelco.com.au/geofeed.csv
source:         APNIC

irt:            IRT-AISPLTIT-AU
address:        15 Kyabra Street, Newstead Qld 4006
e-mail:         abuse@iptelco.com.au
abuse-mailbox:  abuse@iptelco.com.au
admin-c:        AISP7-AP
tech-c:         AISP7-AP
auth:           # Filtered
remarks:        abuse@iptelco.com.au is invalid
mnt-by:         MAINT-AISPLTIT-AU
last-modified:  2025-11-18T00:31:07Z
source:         APNIC

organisation:   ORG-IT2-AP
org-name:       IP Telco
org-type:       LIR
country:        AU
address:        1/200 Barry Parade
phone:          +61-1300790969
e-mail:         abuse@iptelco.com.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:01Z
source:         APNIC

role:           ABUSE AISPLTITAU
country:        ZZ
address:        15 Kyabra Street, Newstead Qld 4006
phone:          +000000000
e-mail:         abuse@iptelco.com.au
admin-c:        AISP7-AP
tech-c:         AISP7-AP
nic-hdl:        AA1905-AP
remarks:        Generated from irt object IRT-AISPLTIT-AU
remarks:        abuse@iptelco.com.au is invalid
abuse-mailbox:  abuse@iptelco.com.au
mnt-by:         APNIC-ABUSE
last-modified:  2024-10-02T13:13:34Z
source:         APNIC

role:           Applied IT Systems Pty Ltd ta IP Telco administra
address:        15 Kyabra Street, Newstead Qld 4006
country:        AU
phone:          +61-1300790969
fax-no:         +61-1300790969
e-mail:         abuse@iptelco.com.au
admin-c:        AISP4-AP
tech-c:         AISP4-AP
nic-hdl:        AISP4-AP
mnt-by:         MAINT-AISPLTIT-AU
last-modified:  2016-09-07T01:32:53Z
source:         APNIC

% Information related to '103.74.66.0/23AS132808'

route:          103.74.66.0/23
origin:         AS132808
descr:          Applied IT Systems Pty Ltd
                15 Kyabra Street
mnt-by:         MAINT-AISPLTIT-AU
last-modified:  2020-05-21T09:27:09Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.36-SNAPSHOT (WHOIS-AU5)