% 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://apps.db.ripe.net/docs/HTML-Terms-And-Conditions

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

% Information related to 'AS51357 - AS52223'

as-block:       AS51357 - AS52223
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:        2021-12-09T08:21:17Z
last-modified:  2021-12-09T08:21:17Z
source:         RIPE

% Information related to 'AS51733'

% Abuse contact for 'AS51733' is 'abuse@bwi.de'

aut-num:        AS51733
as-name:        BWI-GmbH
org:            ORG-BSG10-RIPE
import:         from AS3320 accept ANY
import:         from AS8422 accept ANY
export:         to AS3320 announce AS51733
export:         to AS8422 announce AS51733
admin-c:        BB5071-RIPE
tech-c:         ABL4948-RIPE
tech-c:         JUS2528-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         BWI-GMBH-MNT
created:        2010-10-27T11:26:59Z
last-modified:  2024-05-23T08:36:01Z
source:         RIPE

organisation:   ORG-BSG10-RIPE
org-name:       BWI GmbH
country:        DE
org-type:       LIR
address:        Karl-Legien-Straße 192
address:        53117
address:        Bonn
address:        GERMANY
phone:          +492225 988 0
admin-c:        JS17752-RIPE
tech-c:         JS17752-RIPE
abuse-c:        AR35062-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        BWI-GMBH-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         BWI-GMBH-MNT
created:        2016-01-25T09:37:08Z
last-modified:  2024-05-23T08:36:05Z
source:         RIPE # Filtered

person:         Alexander Blankenburg
address:        BWI GmbH
address:        Auf dem Steinbüchel 22
address:        53340 Meckenheim
address:        GERMANY
phone:          +49222598816554
nic-hdl:        ABL4948-RIPE
mnt-by:         DTAG-NIC
mnt-by:         BWI-GMBH-MNT
created:        2015-07-30T09:39:37Z
last-modified:  2024-05-23T08:10:51Z
source:         RIPE

person:         Britta Fischer
address:        BWI Systeme GmbH
address:        Auf dem Steinbuechel 22
address:        53340 Meckenheim
address:        GERMANY
phone:          +49 2225 9886757
nic-hdl:        BB5071-RIPE
mnt-by:         DTAG-NIC
mnt-by:         BWI-GMBH-MNT
created:        2010-08-31T13:06:36Z
last-modified:  2024-05-23T09:35:48Z
source:         RIPE # Filtered

person:         Jens-Uwe Schwarzkopf
address:        BWI Systeme GmbH
address:        Auf dem Steinbuechel 22
address:        53340 Meckenheim
address:        GERMANY
phone:          +49222598816510
nic-hdl:        JUS2528-RIPE
mnt-by:         DTAG-NIC
mnt-by:         BWI-GMBH-MNT
created:        2015-07-30T09:33:15Z
last-modified:  2024-05-23T08:11:37Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.112.1 (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