% 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 'AS43075 - AS44168'

as-block:       AS43075 - AS44168
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:        2023-12-11T15:09:58Z
last-modified:  2023-12-11T15:09:58Z
source:         RIPE

% Information related to 'AS43978'

% Abuse contact for 'AS43978' is 'noc.it-dienstleistung@atos.net'

aut-num:        AS43978
as-name:        AIDB-AS
remarks:        (formerly Siemens IT-Dienstleistung und Beratung GmbH)
remarks:        (formerly Services for Business IT Ruhr GmbH)
remarks:        Bruchstrasse 5
remarks:        45883 Gelsenkirchen
remarks:        Germany
org:            ORG-SIuB1-RIPE
import:         from AS5400 accept ANY
import:         from AS8881 accept ANY
import:         from AS3320 accept ANY
import:         from AS21150 accept ANY
mp-import:      afi ipv6.unicast from AS8881 accept ANY
export:         to AS5400 announce AS43978
export:         to AS8881 announce AS43978
export:         to AS3320 announce AS43978
export:         to AS21150 announce ANY
mp-export:      afi ipv6.unicast to AS8881 announce AS43978
admin-c:        AIDB-RIPE
tech-c:         AIDB-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         AIDB-NOC
descr:          joerg.heinemann@atos.net 20110916
created:        2007-10-30T12:41:44Z
last-modified:  2018-09-04T10:27:57Z
source:         RIPE

organisation:   ORG-SIuB1-RIPE
org-name:       Atos IT Dienstleistung und Beratung GmbH
country:        DE
org-type:       LIR
address:        Luxemburger Straße 3
address:        45131
address:        Essen
address:        GERMANY
phone:          +492113990
admin-c:        JH2247-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        AIDB-NOC
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AIDB-NOC
abuse-c:        AIDB-RIPE
tech-c:         AIDB-RIPE
created:        2008-09-15T10:54:54Z
last-modified:  2022-05-11T11:45:25Z
source:         RIPE # Filtered

role:           Atos IT-Dienstleistung und Beratung GmbH Role Account
address:        Atos IT-Dienstleistung und Beratung GmbH
address:        Bruchstrasse 5
address:        45883 Gelsenkirchen
address:        Germany
org:            ORG-SIuB1-RIPE
abuse-mailbox:  noc.it-dienstleistung@atos.net
tech-c:         JH2247-RIPE
tech-c:         HELM-RIPE
nic-hdl:        AIDB-RIPE
mnt-by:         AIDB-NOC
mnt-by:         AtosDE-Maintainer
created:        2011-09-20T11:33:29Z
last-modified:  2022-06-02T05:58:38Z
source:         RIPE # Filtered

% 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