% 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 '145.253.253.240 - 145.253.253.255'

% Abuse contact for '145.253.253.240 - 145.253.253.255' is 'abuse.de@vodafone.com'

inetnum:        145.253.253.240 - 145.253.253.255
netname:        BILDUNGS-NET
descr:          Bildungswerk der Hess. Wirtschaft  e.V.
descr:          Emil-von-Behring-Str. 4
descr:          D-60439 Frankfurt
descr:          GERMANY
country:        DE
admin-c:        ANOC1-RIPE
tech-c:         ANOC1-RIPE
status:         ASSIGNED PA
mnt-by:         ARCOR-MNT
created:        2010-07-15T05:15:28Z
last-modified:  2010-07-15T05:15:28Z
source:         RIPE # Filtered

role:           Vodafone Germany IP Core Backbone
address:        Vodafone GmbH
address:        Campus Eschborn
address:        Duesseldorfer Strasse 15
address:        D-65760 Eschborn
address:        Germany
phone:          +49 6196 523 0864
remarks:        trouble: Security issues abuse.de@vodafone.com
remarks:        trouble: Information http://www.vodafone.de
remarks:        trouble: Peering contact peering@adm.arcor.net
remarks:        trouble: Operational issues :
remarks:        DanubiusNOC-DE-FO-FIXED_ro@vodafone.com
remarks:        trouble: Address assignment ip-registry@arcor.net
admin-c:        SM9000-RIPE
admin-c:        NH4266-RIPE
admin-c:        JS19072-RIPE
admin-c:        IE1226-RIPE
admin-c:        TK11590-RIPE
admin-c:        FB3293-RIPE
admin-c:        TG2269-RIPE
tech-c:         NH15-RIPE
nic-hdl:        ANOC1-RIPE
mnt-by:         ARCOR-MNT
created:        2002-07-11T08:48:33Z
last-modified:  2024-01-02T05:59:00Z
source:         RIPE # Filtered
abuse-mailbox:  abuse.de@vodafone.com

% Information related to '145.253.0.0/16AS3209'

route:          145.253.0.0/16
descr:          ARCOR-IP
origin:         AS3209
mnt-by:         ARCOR-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2001-09-22T09:33:45Z
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