% 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 '185.252.154.128 - 185.252.154.255'

% Abuse contact for '185.252.154.128 - 185.252.154.255' is 'abuse@xgbe.cz'

inetnum:        185.252.154.128 - 185.252.154.255
netname:        CZ-LibresNET-Pribor
country:        CZ
admin-c:        MD24968-RIPE
tech-c:         RP90-RIPE
status:         ASSIGNED PA
geoloc:         49.6411367 18.1530414
mnt-by:         cz-miroslavdanecek-1-mnt
created:        2019-11-02T22:10:21Z
last-modified:  2019-11-02T22:19:12Z
source:         RIPE

person:         Miroslav Danecek
address:        Lichnov 451
address:        742 75
address:        Lichnov
address:        CZECH REPUBLIC
phone:          +420 603 468 354
nic-hdl:        MD24968-RIPE
mnt-by:         cz-miroslavdanecek-1-mnt
created:        2018-03-27T07:41:35Z
last-modified:  2018-03-27T07:41:36Z
source:         RIPE

person:         Radomir Plasovsky
address:        Liskovec 387
address:        Frydek-Mistek
address:        738 01
address:        The Czech Republic
phone:          +420 775 802 904
nic-hdl:        RP90-RIPE
mnt-by:         cz-fixprozs-1-mnt
created:        1970-01-01T00:00:00Z
last-modified:  2019-09-06T16:27:48Z
source:         RIPE # Filtered

% Information related to '185.252.152.0/22AS206429'

route:          185.252.152.0/22
descr:          CORSAT s.r.o.
descr:          CZ
origin:         AS206429
mnt-by:         cz-corsat-1-mnt
created:        2018-03-29T21:20:39Z
last-modified:  2018-03-29T21:20:39Z
source:         RIPE

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

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