% 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 '80.240.144.0 - 80.240.144.255'

% Abuse contact for '80.240.144.0 - 80.240.144.255' is 'adminsserbia@igt.com'

inetnum:        80.240.144.0 - 80.240.144.255
netname:        FINSOFTNET
descr:          WanBlock
country:        RS
admin-c:        DM832-RIPE
tech-c:         MJ1777-RIPE
status:         ASSIGNED PA
mnt-by:         MNT-DMARTIC
created:        2006-09-18T10:29:52Z
last-modified:  2008-09-02T12:29:28Z
source:         RIPE

person:         Dusan Martic
address:        BEG Finsoft
address:        Kosovska 51/I
address:        11000 Beograd
address:        Serbia
phone:          +381 11 3305757
fax-no:         +381 11 3305701
nic-hdl:        DM832-RIPE
created:        1970-01-01T00:00:00Z
last-modified:  2020-06-03T10:35:04Z
source:         RIPE # Filtered
mnt-by:         MNT-FINSOFT

person:         Milan Jelenic
address:        IGT Belgrade
address:        Bulevar Mihaila Pupina 6 / VII
address:        11000 Belgrade
address:        Serbia
phone:          +381 11 3305775
nic-hdl:        MJ1777-RIPE
created:        2004-03-31T11:49:09Z
last-modified:  2023-04-19T13:23:17Z
source:         RIPE # Filtered
mnt-by:         MNT-FINSOFT

% Information related to '80.240.144.0/20AS41507'

route:          80.240.144.0/20
descr:          FINSOFTNET
origin:         AS41507
mnt-by:         MNT-FINSOFT
created:        2006-09-20T07:42:54Z
last-modified:  2016-01-04T12:54:42Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.112 (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