% 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 '89.31.15.0 - 89.31.15.255'

% Abuse contact for '89.31.15.0 - 89.31.15.255' is 'lir@nej.cz'

inetnum:        89.31.15.0 - 89.31.15.255
netname:        MC-TSAS-FM-1
descr:          TS a.s. Frýdek-Místek
country:        CZ
admin-c:        SMIK1-RIPE
tech-c:         SMIK1-RIPE
status:         ASSIGNED PA
mnt-by:         MCNETCZ-MNT
mnt-lower:      MCNETCZ-MNT
remarks:        Resources by MCnet
mnt-routes:     MCNETCZ-MNT
created:        2007-05-23T12:48:31Z
last-modified:  2016-09-08T18:53:04Z
source:         RIPE

person:         Stanislav Mikula
address:        MCnet, s.r.o.
address:        J. Opletala 924
address:        Frydek-Mistek
address:        Czech Republic
phone:          +420558441212
phone:          +420777701711
nic-hdl:        SMIK1-RIPE
mnt-by:         mcnetcz-mnt
org:            ORG-Ms47-RIPE
created:        2007-06-10T21:02:05Z
last-modified:  2014-04-17T06:08:13Z
source:         RIPE # Filtered

% Information related to '89.31.12.0/22AS44070'

route:          89.31.12.0/22
descr:          MCNET-SUBNET-MC2
origin:         AS44070
mnt-by:         mcnetcz-mnt
created:        2007-11-26T09:37:35Z
last-modified:  2009-02-08T22:13:34Z
source:         RIPE

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

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