% 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 '83.175.121.192 - 83.175.121.199'

% Abuse contact for '83.175.121.192 - 83.175.121.199' is 'abuse@ikbnet.at'

inetnum:        83.175.121.192 - 83.175.121.199
netname:        IKG-AG-BRG-Sillgasse-AT-NET-01
descr:          Tiroler Bildungsservice BORG Sillgasse
country:        AT
admin-c:        NIT11-RIPE
tech-c:         NIT11-RIPE
status:         ASSIGNED PA
mnt-by:         MNT-IKB
created:        2014-02-27T15:11:33Z
last-modified:  2020-04-01T14:03:01Z
source:         RIPE

role:           NOC IKBNET Team
address:        Innsbrucker Kommunalbetriebe AG
address:        Langer Weg 29
address:        A-6020 Innsbruck
phone:          +43 512 502 0
org:            ORG-IKA1-RIPE
admin-c:        GW636-RIPE
tech-c:         TS5738-RIPE
tech-c:         CG11120-RIPE
tech-c:         MM34135-RIPE
tech-c:         MV14533-RIPE
nic-hdl:        NIT11-RIPE
abuse-mailbox:  abuse@ikbnet.at
mnt-by:         MNT-IKB
created:        2014-01-15T09:26:14Z
last-modified:  2020-03-26T09:37:27Z
source:         RIPE # Filtered

% Information related to '83.175.64.0/18AS31510'

route:          83.175.64.0/18
descr:          Innsbrucker Kommunalbetriebe AG - Austria
origin:         AS31510
mnt-by:         MNT-IKB
created:        2004-07-29T12:39:12Z
last-modified:  2004-07-29T12:39:12Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.114 (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