% 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 '2a01:598:8000::/33'

% Abuse contact for '2a01:598:8000::/33' is 'abuse@telekom.de'

inet6num:       2a01:598:8000::/33
assignment-size:64
netname:        Customer-v6-0001
country:        DE
admin-c:        AS8728-RIPE
tech-c:         MS47198-RIPE
status:         AGGREGATED-BY-LIR
remarks:        ***************************************************************************
remarks:        Please send any abuse complaints to: abuse@telekom.de
remarks:        Behoerdenauskuenfte koennen nur ueber folgende Ruf- bzw. Faxnummern beantwortet werden:
remarks:        Fax: 0180-18811-66 (0,039 Euro/Minute aus dem Festnetz der Deutschen Telekom AG.)
remarks:        Tel.: 0180-18811-77 (0,039 Euro/Minute aus dem Festnetz der Deutschen Telekom AG.)
remarks:        ***************************************************************************
mnt-by:         MNT-TMD
created:        2018-10-04T07:12:50Z
last-modified:  2019-01-24T09:22:11Z
source:         RIPE

person:         Alexander Schloesser
address:        Telekom Deutschland GmbH
address:        Landgrabenweg 151
address:        D-53227 Bonn
address:        Germany
phone:          +49 228 181 0
mnt-by:         MNT-TMD
nic-hdl:        AS8728-RIPE
created:        2005-08-09T11:13:06Z
last-modified:  2018-08-22T11:42:49Z
source:         RIPE # Filtered

person:         Mirko Sitte
address:        Telekom Deutschland GmbH
address:        Landgrabenweg 151
address:        D-53227 Bonn
address:        Germany
phone:          +49 228 936 0
nic-hdl:        MS47198-RIPE
mnt-by:         MNT-TMD
created:        2002-07-08T07:23:50Z
last-modified:  2012-07-30T08:38:47Z
source:         RIPE # Filtered

% Information related to '2a01:598:8000::/33AS44178'

route6:         2a01:598:8000::/33
descr:          Telekom Deutschland GmbH
origin:         AS44178
mnt-by:         MNT-TMD
created:        2012-08-10T10:49:01Z
last-modified:  2012-08-10T10:49:01Z
source:         RIPE

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

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