% 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 '109.73.20.0 - 109.73.23.255'

% Abuse contact for '109.73.20.0 - 109.73.23.255' is 'abuse@netkom.de'

inetnum:        109.73.20.0 - 109.73.23.255
netname:        ITSCHULLER-NET
descr:          IT-Systeme Schuller
descr:          Meistereigasse 4
descr:          DE-99706 Badra
country:        DE
admin-c:        TS5079-RIPE
tech-c:         TNKH-RIPE
status:         ASSIGNED PA
remarks:
mnt-by:         MNT-TNETKOM
created:        2011-04-19T14:55:05Z
last-modified:  2011-04-19T14:55:05Z
source:         RIPE

role:           TNETKOM Hostmaster
address:        Thueringer Netkom GmbH
address:        Schwanseestrasse 13
address:        99423 Weimar
address:        Germany
abuse-mailbox:  abuse@netkom.de
admin-c:        TV1427-RIPE
admin-c:        MS50939-RIPE
tech-c:         TV1427-RIPE
tech-c:         MS50939-RIPE
nic-hdl:        TNKH-RIPE
mnt-by:         MNT-TNETKOM
created:        2009-12-23T13:30:49Z
last-modified:  2020-09-15T12:23:52Z
source:         RIPE # Filtered

person:         Thomas Schuller
address:        IT Systeme Schuller Thomas Schuller
address:        Meistereigasse 4
address:        99706 Badra
address:        Germany
phone:          +49 3632 541366
nic-hdl:        TS5079-RIPE
mnt-by:         MK-NETZDIENSTE-MNT
created:        2009-03-20T13:48:08Z
last-modified:  2009-03-20T13:48:08Z
source:         RIPE # Filtered

% Information related to '109.73.16.0/20AS196714'

route:          109.73.16.0/20
descr:          Thueringer Netkom GmbH AS196714
origin:         AS196714
mnt-by:         MNT-TNETKOM
created:        2010-02-26T09:25:58Z
last-modified:  2010-02-26T09:25:58Z
source:         RIPE

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