% 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 '91.141.0.0 - 91.141.63.255'

% Abuse contact for '91.141.0.0 - 91.141.63.255' is 'abuse@drei.com'

inetnum:        91.141.0.0 - 91.141.63.255
netname:        AT-ONE-POOL1
descr:          Network of Hutchison Drei Austria GmbH
country:        AT
admin-c:        ONE23-RIPE
tech-c:         ONE23-RIPE
status:         ASSIGNED PA
mnt-by:         AS12635-MNT
mnt-lower:      AS12635-MNT
mnt-domains:    AS12635-MNT
mnt-routes:     AS12635-MNT
created:        2006-10-24T10:55:19Z
last-modified:  2013-08-28T05:47:33Z
source:         RIPE

role:           H3A IP Network Systems
address:        Network of Hutchison Drei Austria GmbH
address:        Bruenner Strasse 52
address:        A-1210 Vienna
phone:          +43 50660 0
remarks:        ***************************************
remarks:        Information http://www.drei.at
remarks:        Peering contact noc@drei.com
remarks:        Abuse contact abuse@drei.com
remarks:        ***************************************
admin-c:        WN43-RIPE
tech-c:         WN43-RIPE
tech-c:         SM34561-RIPE
abuse-mailbox:  abuse@drei.com
nic-hdl:        ONE23-RIPE
mnt-by:         AS12635-MNT
created:        2002-01-02T16:17:57Z
last-modified:  2024-01-29T13:43:11Z
source:         RIPE # Filtered

% Information related to '91.141.8.0/21AS12635'

route:          91.141.8.0/21
descr:          Network of Hutchison Drei Austria GmbH => NAT Pool
origin:         AS12635
mnt-by:         AS12635-MNT
created:        2014-04-17T10:51:15Z
last-modified:  2020-01-08T08:16:55Z
source:         RIPE

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

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