% 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 'AS28914 - AS29090'

as-block:       AS28914 - AS29090
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2018-11-22T15:27:31Z
last-modified:  2018-11-22T15:27:31Z
source:         RIPE

% Information related to 'AS28932'

% Abuse contact for 'AS28932' is 'abuse@ip-exchange.de'

aut-num:        AS28932
as-name:        GFK-AS
org:            ORG-GS68-RIPE
import:         from AS8767 action pref=100; accept ANY
import:         from AS24989 action pref=100; accept ANY
export:         to AS8767 announce AS28932
export:         to AS24989 announce AS28932
admin-c:        DR10367-RIPE
tech-c:         JV6108-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         IPX-MNT
created:        2003-04-09T15:37:05Z
last-modified:  2021-08-03T10:13:59Z
source:         RIPE
sponsoring-org: ORG-IEG12-RIPE

organisation:   ORG-GS68-RIPE
org-name:       GfK GmbH
country:        DE
org-type:       OTHER
address:        GfK
address:        Sophie-Germain-Strasse 3-5
address:        90433 Nuernberg
address:        DE
phone:          +49 911 395 0
abuse-c:        AR30305-RIPE
mnt-ref:        IPX-MNT
mnt-by:         IPX-MNT
created:        2010-10-04T09:23:21Z
last-modified:  2024-02-21T15:37:18Z
source:         RIPE # Filtered

person:         Daran Rowlands
address:        GfK U.K. Limited
address:        IT Services
address:        25 Canada Square, Canary Wharf, London
address:        E14 5LQ United Kingdom
phone:          +44 20 7890 9979
nic-hdl:        DR10367-RIPE
mnt-by:         IPPARTNER-MNT
mnt-by:         IPX-MNT
created:        2021-08-03T09:48:41Z
last-modified:  2021-08-03T09:48:41Z
source:         RIPE # Filtered

person:         Juergen Vogelmann
address:        GfK SE
address:        IT-Services
address:        Sophie-Germain-Strasse 3-5
address:        D-90433 Nuernberg
phone:          +49 911 3954666
nic-hdl:        JV6108-RIPE
mnt-by:         IPX-MNT
created:        2015-09-08T14:24:35Z
last-modified:  2021-08-03T09:53:56Z
source:         RIPE # Filtered

% 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