% APNIC found the following authoritative answer from: whois.ripe.net

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '31.204.152.0 - 31.204.153.255'

% Abuse contact for '31.204.152.0 - 31.204.153.255' is 'abuse@i3d.net'

inetnum:        31.204.152.0 - 31.204.153.255
netname:        i3Dnet-nlrtm1-K130134
country:        NL
admin-c:        Ir809-RIPE
tech-c:         Ir809-RIPE
status:         ASSIGNED PA
mnt-by:         MNT-i3D
created:        2011-08-10T13:36:14Z
last-modified:  2023-12-15T10:56:27Z
source:         RIPE

role:           i3D.net Role
address:        i3D.net - Interactive 3D
address:        Rivium 1e Straat 1
address:        2909LE Capelle aan den IJssel
address:        The Netherlands
phone:          +31108900070
org:            ORG-IA772-RIPE
mnt-by:         MNT-i3D
mnt-by:         AS49544-MNT
abuse-mailbox:  abuse@i3d.net
admin-c:        MJS89-RIPE
admin-c:        SI982-RIPE
tech-c:         SI982-RIPE
tech-c:         MJS89-RIPE
tech-c:         EVER1-RIPE
tech-c:         RVE2600-RIPE
tech-c:         MPW16-RIPE
nic-hdl:        Ir809-RIPE
created:        2008-06-24T12:25:11Z
last-modified:  2022-08-22T15:34:02Z
source:         RIPE # Filtered

% Information related to '31.204.128.0/19AS49544'

route:          31.204.128.0/19
descr:          i3D.net B.V. (AS49544)
remarks:        --------------------------------------------------------
remarks:        Abuse : abuse@i3d.net
remarks:        NOC: noc@i3d.net
remarks:        --------------------------------------------------------
origin:         AS49544
mnt-by:         MNT-I3D
created:        2011-04-29T15:25:29Z
last-modified:  2018-03-09T14:43:17Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.114 (BUSA)

Search for
IP address lookups			Miscellaneous queries
-l	1st level less specific		-i	Inverse attributes	None admin-c admin-c,tech-c,zone-c author cross-mnt cross-nfy local-as mbrs-by-ref member-of mnt-by mnt-lower mnt-nfy mnt-routes notify nserver origin person referral-by rev-srv sub-dom tech-c upd-to zone-c
-L	All less specific		-T	Object types	All as-block as-set aut-num domain filter-set inet-rtr inet6num inetnum irt key-cert mntner peering-set person role route route-set rtr-set
-m	1st level more specific
-M	All more specific		Query hints Include "AS" in front of an AS number. Example: AS4808 Include "-t" (template only) or "-v" (template and description) in front of an object name to view the template Example: -t inetnum
-x	Exact match only
-d	Associated reverse domain