% 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 '2400:3740::/32'

% Abuse contact for '2400:3740::/32' is 'abuse@lightningbroadband.com.au'

inet6num:       2400:3740::/32
netname:        LIGHTNING-AU
descr:          Lightning Broadband Pty Ltd
country:        AU
org:            ORG-LBPL4-AP
admin-c:        LBPL4-AP
tech-c:         LBPL4-AP
status:         ALLOCATED PORTABLE
abuse-c:        AL1593-AP
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-LIGHTNING-AU
mnt-routes:     MAINT-LIGHTNING-AU
mnt-irt:        IRT-LIGHTNING-AU
last-modified:  2020-09-28T05:12:19Z
source:         APNIC

irt:            IRT-LIGHTNING-AU
address:        Suite 104, 427 Glen Huntly road, Elsternwick VIC 3185
e-mail:         admin@lightningbroadband.com.au
abuse-mailbox:  abuse@lightningbroadband.com.au
admin-c:        LBPL4-AP
tech-c:         LBPL4-AP
auth:           # Filtered
remarks:        admin@lightningbroadband.com.au was validated on 2025-10-01
remarks:        abuse@lightningbroadband.com.au was validated on 2025-11-11
mnt-by:         MAINT-LIGHTNING-AU
last-modified:  2025-11-18T00:33:59Z
source:         APNIC

organisation:   ORG-LBPL4-AP
org-name:       Lightning Broadband Pty Ltd
org-type:       LIR
country:        AU
address:        Suite 104
address:        427 Glen Huntly road
phone:          +61390890515
e-mail:         hello@lightningbroadband.com.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2024-09-25T13:06:46Z
source:         APNIC

role:           ABUSE LIGHTNINGAU
country:        ZZ
address:        Suite 104, 427 Glen Huntly road, Elsternwick VIC 3185
phone:          +000000000
e-mail:         admin@lightningbroadband.com.au
admin-c:        LBPL4-AP
tech-c:         LBPL4-AP
nic-hdl:        AL1593-AP
remarks:        Generated from irt object IRT-LIGHTNING-AU
remarks:        admin@lightningbroadband.com.au was validated on 2025-10-01
remarks:        abuse@lightningbroadband.com.au was validated on 2025-11-11
abuse-mailbox:  abuse@lightningbroadband.com.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-11-11T23:31:13Z
source:         APNIC

role:           Lightning Broadband Pty Ltd administrator
address:        Suite 1, 431 Glen Huntly Road, Elsternwick VICTORIA 3185
country:        AU
phone:          +61390890515
e-mail:         jrich@lightningbroadband.com.au
admin-c:        LBPL4-AP
tech-c:         LBPL4-AP
nic-hdl:        LBPL4-AP
mnt-by:         MAINT-LIGHTNING-AU
last-modified:  2020-09-25T03:32:31Z
source:         APNIC

% Information related to '2400:3740::/32AS136000'

route6:         2400:3740::/32
origin:         AS136000
descr:          Lightning Broadband Pty Ltd
                Suite 1
                431 Glen Huntly Road
mnt-by:         MAINT-LIGHTNING-AU
last-modified:  2020-09-28T05:15:00Z
source:         APNIC

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