% 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 'MAINT-NZ-IRD'

mntner:         MAINT-NZ-IRD
upd-to:         apnicadmin@ird.govt.nz
auth:           # Filtered
descr:          Inland Revenue Department
descr:          NZ Government
descr:          Maintainer Handle
admin-c:        RU16-AP
tech-c:         TT640-AP
country:        NZ
mnt-nfy:        apnicadmin@ird.govt.nz
referral-by:    APNIC-HM
mnt-by:         MAINT-NZ-IRD
last-modified:  2013-07-30T00:15:25Z
source:         APNIC

person:         Resource Management Unit
nic-hdl:        RU16-AP
e-mail:         apnicadmin@ird.govt.nz
address:        PO Box 2198
address:        Wellington 6140
address:        New Zealand
phone:          +64-4-890-1500
fax-no:         +64-4-890-4704
country:        NZ
mnt-by:         MAINT-NZ-IRD
last-modified:  2012-02-14T21:44:21Z
source:         APNIC

person:         Telecommunications Team
address:        PO Box 2198
                Wellington 6140
                New Zealand
country:        NZ
phone:          +64-4-890-1500
e-mail:         telco-team@ird.govt.nz
nic-hdl:        TT640-AP
notify:         apnicadmin@ird.govt.nz
abuse-mailbox:  abuse@ird.govt.nz
mnt-by:         MAINT-NZ-IRD
last-modified:  2013-07-30T00:12:47Z
source:         APNIC

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