% 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 '109.73.25.96 - 109.73.25.111'

% Abuse contact for '109.73.25.96 - 109.73.25.111' is 'abuse@netkom.de'

inetnum:        109.73.25.96 - 109.73.25.111
netname:        DOTSOURCE-NET
descr:          dotSource GmbH
descr:          Goethestrasse 1
descr:          DE-07743 Jena
country:        DE
admin-c:        TS6850-RIPE
tech-c:         TNKH-RIPE
status:         ASSIGNED PA
remarks:
mnt-by:         MNT-TNETKOM
created:        2011-11-01T14:35:15Z
last-modified:  2013-04-08T10:38:43Z
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:         Torsten Senf
address:        dotSource GmbH
address:        Goethestrasse 1
address:        07743 Jena
address:        DE
phone:          +49 3641 797 9000
fax-no:         +49 3641 797 9099
nic-hdl:        TS6850-RIPE
mnt-by:         MNT-TNETKOM
created:        2011-11-01T14:34:09Z
last-modified:  2017-10-30T22:15:42Z
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 1.114 (SHETLAND)

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