% 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 '46.30.236.0 - 46.30.239.255'

% Abuse contact for '46.30.236.0 - 46.30.239.255' is 'abuse@trionet.cz'

inetnum:        46.30.236.0 - 46.30.239.255
netname:        CZ-TRIONET-20100908
descr:          IP NETWORK
country:        CZ
admin-c:        PP5832-RIPE
tech-c:         PP5832-RIPE
status:         ASSIGNED PA
mnt-by:         MNT-TRIONET
mnt-lower:      MNT-TRIONET
mnt-routes:     MNT-TRIONET
created:        2010-11-19T12:00:30Z
last-modified:  2010-11-19T12:00:30Z
source:         RIPE

person:         Petr Plodik
address:        Trionet
address:        Kamenicka 1994
address:        Melnik
address:        Czech Republic
phone:          +420 602 303254
nic-hdl:        PP5832-RIPE
created:        1970-01-01T00:00:00Z
last-modified:  2017-10-30T21:45:08Z
source:         RIPE # Filtered
mnt-by:         MNT-TRIONET

% Information related to '46.30.236.0/22AS33883'

route:          46.30.236.0/22
descr:          TRIOPTIMUM - NET
origin:         AS33883
mnt-by:         MNT-TRIONET
created:        2010-12-13T12:38:17Z
last-modified:  2010-12-13T12:38:17Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.120 (ABERDEEN)