% 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 '93.99.99.0 - 93.99.99.255'

% Abuse contact for '93.99.99.0 - 93.99.99.255' is 'abuse@vodafone.cz'

inetnum:        93.99.99.0 - 93.99.99.255
netname:        CZ-I2NET
descr:          Petr Spendlik - i2net, Zlin
country:        CZ
admin-c:        PS7424-RIPE
tech-c:         PS7424-RIPE
status:         ASSIGNED PA
mnt-by:         OSKR-MNT
mnt-lower:      OSKR-MNT
created:        2010-03-23T09:23:39Z
last-modified:  2024-04-08T17:03:52Z
source:         RIPE

person:         Petr Spendlik
address:        Lhota 134
address:        Zlin-Malenovice
address:        Czech Republic
phone:          +420774636654
mnt-by:         DIALTELECOM-MNT
nic-hdl:        PS7424-RIPE
created:        2007-02-09T07:37:17Z
last-modified:  2011-06-07T07:44:54Z
source:         RIPE # Filtered

% Information related to '93.99.0.0/17AS16019'

route:          93.99.0.0/17
descr:          Vodafone Czech Republic a.s.
origin:         AS16019
mnt-by:         VFCZ-MNT
created:        2021-02-02T11:00:45Z
last-modified:  2021-02-02T11:00:45Z
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