% 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 '115.124.0.0 - 115.124.7.255'

% Abuse contact for '115.124.0.0 - 115.124.7.255' is 'support@atturra.com'

inetnum:        115.124.0.0 - 115.124.7.255
netname:        NETFILTER-AU
descr:          Netfilter Pty Ltd
descr:          Unit 1, 20 Barcoo Street
country:        AU
org:            ORG-NPL2-AP
admin-c:        NF22-AU
tech-c:         NF22-AU
abuse-c:        AS2740-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-NETFILTER
mnt-routes:     MAINT-AU-NETFILTER
mnt-irt:        IRT-SOMERVILLE-AU
last-modified:  2020-08-26T13:04:09Z
source:         APNIC

irt:            IRT-SOMERVILLE-AU
address:        Somerville Group
address:        Level 10, Tower B, 207 Pacific Highway
address:        St Leonards, NSW, 2065
address:        Australia
e-mail:         support@atturra.com
abuse-mailbox:  support@atturra.com
admin-c:        NF22-AU
tech-c:         NF22-AU
auth:           # Filtered
remarks:        support@atturra.com was validated on 2025-10-07
mnt-by:         MAINT-AU-NETFILTER
last-modified:  2026-01-05T23:48:50Z
source:         APNIC

organisation:   ORG-NPL2-AP
org-name:       Netfilter Pty Ltd
org-type:       LIR
country:        AU
address:        Somerville Group
address:        Level 10, Tower B, 207 Pacific Highway
phone:          +61-2-84254000
fax-no:         +61-2-84254099
e-mail:         support@somerville.com.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:18Z
source:         APNIC

role:           ABUSE SOMERVILLEAU
country:        ZZ
address:        Somerville Group
address:        Level 10, Tower B, 207 Pacific Highway
address:        St Leonards, NSW, 2065
address:        Australia
phone:          +000000000
e-mail:         support@atturra.com
admin-c:        NF22-AU
tech-c:         NF22-AU
nic-hdl:        AS2740-AP
remarks:        Generated from irt object IRT-SOMERVILLE-AU
remarks:        support@atturra.com was validated on 2025-10-07
abuse-mailbox:  support@atturra.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-07T20:07:49Z
source:         APNIC

role:           Netfilter IP Administration
address:        Level 4, 20 Barcoo St, Roseville,   NSW    2069
country:        AU
phone:          +611300209233
e-mail:         support@somerville.com.au
admin-c:        RF400-AU
tech-c:         RF400-AU
nic-hdl:        NF22-AU
mnt-by:         MAINT-AU-NETFILTER
last-modified:  2021-07-16T06:51:13Z
source:         APNIC

% Information related to '115.124.0.0/21AS38858'

route:          115.124.0.0/21
origin:         AS38858
descr:          Netfilter Pty Ltd
                Somerville Group
                Level 10, Tower B, 207 Pacific Highway
mnt-by:         MAINT-AU-NETFILTER
last-modified:  2023-04-14T23:05:58Z
source:         APNIC

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