% 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 '217.156.83.0 - 217.156.83.255'

% Abuse contact for '217.156.83.0 - 217.156.83.255' is 'abuse@rnc.ro'

inetnum:        217.156.83.0 - 217.156.83.255
netname:        SOFTWIN
descr:          SC SOFTWIN SRL
descr:          Str. Maguricea, Nr. 20, Bl. 7p, Ap. 7, Sector 1, Bucuresti
country:        RO
admin-c:        TS38244-RIPE
tech-c:         CF7605-RIPE
status:         ASSIGNED PA
mnt-by:         AS3233-MNT
mnt-lower:      AS3233-MNT
mnt-routes:     AS3233-MNT
mnt-routes:     SOFTWIN-MNT
created:        2002-04-06T18:46:14Z
last-modified:  2021-10-29T05:58:35Z
source:         RIPE # Filtered

person:         Cristian Fatu
address:        Bd.Dimitrie Pompei nr.10A, Cladirea Conect 1, Etaj 1
address:        Sector 2, Bucharest
phone:          +40-21-2330780
fax-no:         +40-21-2330763
nic-hdl:        CF7605-RIPE
mnt-by:         AS3233-MNT
created:        2017-07-17T11:57:00Z
last-modified:  2017-07-17T11:57:00Z
source:         RIPE # Filtered

person:         Theodor Stadiu
address:        Bd.Dimitrie Pompei nr.10A, Cladirea Conect 1, Etaj 1
address:        Sector 2, Bucharest
phone:          +40-21-2330780
fax-no:         +40-21-2330763
nic-hdl:        TS38244-RIPE
mnt-by:         AS3233-MNT
created:        2017-07-17T11:55:49Z
last-modified:  2017-07-17T11:55:49Z
source:         RIPE # Filtered

% Information related to '217.156.83.0/24AS20930'

route:          217.156.83.0/24
descr:          SoftWin
origin:         AS20930
mnt-by:         SOFTWIN-MNT
created:        2002-04-07T10:47:43Z
last-modified:  2002-04-07T10:47:43Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.111 (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