% 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 '82.100.39.0 - 82.100.39.255'

% Abuse contact for '82.100.39.0 - 82.100.39.255' is 'abuse@dialtelecom.cz'

inetnum:        82.100.39.0 - 82.100.39.255
netname:        Gigant
descr:          Gigant GROUP s.r.o.
country:        CZ
admin-c:        VK753-RIPE
tech-c:         PJ2835-RIPE
status:         ASSIGNED PA
mnt-by:         DIALTELECOM-MNT
created:        2010-12-29T15:24:53Z
last-modified:  2013-03-29T16:58:12Z
source:         RIPE

person:         Patrik Jonas
address:        Palackeho 143
address:        Cesky Brod
address:        Czech Republic
phone:          +420321620215
nic-hdl:        PJ2835-RIPE
mnt-by:         DIALTELECOM-MNT
created:        2010-12-29T15:20:28Z
last-modified:  2011-06-07T10:02:49Z
source:         RIPE # Filtered

person:         Vladimir Kvas
address:        Gigant GROUP s.r.o.
address:        Rohanske nabrezi 657/7
address:        Praha 8
address:        186 00
address:        The Czech Republic
phone:          +420.736489799
nic-hdl:        VK753-RIPE
mnt-by:         DIALTELECOM-MNT
created:        2008-03-20T17:18:54Z
last-modified:  2015-05-28T14:00:39Z
source:         RIPE

% Information related to '82.100.0.0/18AS29208'

route:          82.100.0.0/18
descr:          Dial Telecom, a.s.
origin:         AS29208
mnt-by:         AS29208-MNT
created:        2007-12-20T13:12:05Z
last-modified:  2011-06-06T09:21:07Z
source:         RIPE

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