% 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 '163.47.236.0 - 163.47.239.255'

% Abuse contact for '163.47.236.0 - 163.47.239.255' is 'abuse-alerts@as55850.net'

inetnum:        163.47.236.0 - 163.47.239.255
netname:        MERCURYNZ-NZ
descr:          Mercury NZ Limited
country:        NZ
org:            ORG-MRP1-AP
admin-c:        ANA74-AP
tech-c:         ANA74-AP
abuse-c:        AN2989-AP
mnt-by:         APNIC-HM
mnt-lower:      MAINT-NZ-MERCURYNZ
mnt-routes:     MAINT-NZ-MERCURYNZ
mnt-irt:        IRT-NZ-MERCURYNZ
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:        --------------------------------------------------------
last-modified:  2024-05-26T23:53:43Z
source:         APNIC

irt:            IRT-NZ-MERCURYNZ
address:        Mercury NZ Limited
address:        The Mercury Building 33
address:        Broadway, Newmarket
e-mail:         noc@as55850.net
abuse-mailbox:  abuse-alerts@as55850.net
admin-c:        MNLA8-AP
tech-c:         MNLA8-AP
auth:           # Filtered
remarks:        abuse-alerts@as55850.net was validated on 2024-11-27
remarks:        noc@as55850.net was validated on 2024-12-03
mnt-by:         MAINT-NZ-MERCURYNZ
last-modified:  2024-12-03T17:15:58Z
source:         APNIC

organisation:   ORG-MRP1-AP
org-name:       Mercury NZ Limited
org-type:       LIR
country:        NZ
address:        The Mercury Building 33, Broadway
address:        Newmarket
phone:          +6495803662
fax-no:         +6495803699
e-mail:         noc@as55850.net
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:43Z
source:         APNIC

role:           ABUSE NZMERCURYNZ
country:        ZZ
address:        Mercury NZ Limited
address:        The Mercury Building 33
address:        Broadway, Newmarket
phone:          +000000000
e-mail:         noc@as55850.net
admin-c:        MNLA8-AP
tech-c:         MNLA8-AP
nic-hdl:        AN2989-AP
remarks:        Generated from irt object IRT-NZ-MERCURYNZ
remarks:        abuse-alerts@as55850.net was validated on 2024-11-27
remarks:        noc@as55850.net was validated on 2024-12-03
abuse-mailbox:  abuse-alerts@as55850.net
mnt-by:         APNIC-ABUSE
last-modified:  2024-12-03T17:16:29Z
source:         APNIC

role:           AS55850 - Network Administrator
address:        P.O. Box 12023
address:        Tauranga Mail Centre
address:        Tauranga 3143
country:        NZ
phone:          +6475476107
e-mail:         noc@as55850.net
admin-c:        MS2406-AP
tech-c:         DB720-AP
nic-hdl:        ANA74-AP
mnt-by:         MAINT-NZ-MERCURYNZ
last-modified:  2022-05-09T01:14:14Z
source:         APNIC

% Information related to '163.47.236.0/23AS9876'

route:          163.47.236.0/23
origin:         AS9876
descr:          NOW New Zealand Ltd.
                2 Bridge St
                Ahuriri
mnt-by:         MAINT-NZ-MERCURYNZ
last-modified:  2024-05-27T00:10:11Z
source:         APNIC

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