% 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 '158.102.0.0 - 158.102.255.255'

% No abuse contact registered for 158.102.0.0 - 158.102.255.255

inetnum:        158.102.0.0 - 158.102.255.255
netname:        CSI-Piemonte-net
descr:          Consorzio per il Sistema Informativo
descr:          C.so Unione Sovietica 216
descr:          Turin, TO I-10134
country:        IT
admin-c:        PT798-RIPE
admin-c:        ES6252-RIPE
tech-c:         CPLS1-RIPE
status:         LEGACY
remarks:        Academic and Regional Government Information Service
remarks:        Fully-managed
mnt-by:         AS2594-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2023-07-27T09:13:06Z
source:         RIPE

person:         CSI PIEMONTE LIR STAFF
address:        C.so Unione Sovietica 216
address:        I-10134 TORINO
address:        Italy
phone:          +39 011 3168849
nic-hdl:        CPLS1-RIPE
created:        2003-11-14T10:30:30Z
last-modified:  2017-10-30T21:46:10Z
source:         RIPE # Filtered
mnt-by:         CSIPIEMONTE-MNT

person:         Enrico Sada
address:        CSI-Piemonte
address:        C.so Unione Sovietica 216
address:        I-10134 TORINO
address:        Italy
phone:          +39 011 3165241
nic-hdl:        ES6252-RIPE
mnt-by:         CSIPIEMONTE-MNT
created:        2012-04-06T09:41:52Z
last-modified:  2012-04-06T09:53:30Z
source:         RIPE # Filtered

person:         Paola Tavella
address:        CSI-Piemonte
address:        C.so Unione Sovietica 216
address:        I-10134 TORINO
address:        Italy
phone:          +39 011 3168385
nic-hdl:        PT798-RIPE
created:        1970-01-01T00:00:00Z
last-modified:  2016-04-05T16:09:37Z
mnt-by:         RIPE-NCC-LOCKED-MNT
source:         RIPE # Filtered

% Information related to '158.102.0.0/16AS2594'

route:          158.102.0.0/16
descr:          CSI-PIEMONTE
origin:         AS2594
mnt-by:         AS2594-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2001-09-22T09:33:20Z
source:         RIPE

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