% 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 '193.135.64.0 - 193.135.95.255'

% Abuse contact for '193.135.64.0 - 193.135.95.255' is 'telematik@aio.so.ch'

inetnum:        193.135.64.0 - 193.135.95.255
netname:        SOLO-NET
country:        CH
org:            ORG-AfIu3-RIPE
admin-c:        AG22471-RIPE
admin-c:        PA10154-RIPE
tech-c:         AG22471-RIPE
tech-c:         PA10154-RIPE
status:         ASSIGNED PI
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-AIO
mnt-by:         SOLNET-NOC
mnt-routes:     SOLNET-NOC
created:        1970-01-01T00:00:00Z
last-modified:  2023-07-07T07:16:45Z
source:         RIPE # Filtered
sponsoring-org: ORG-SA7-RIPE

organisation:   ORG-AfIu3-RIPE
org-name:       Amt fuer Informatik und Organisation des Kantons Solothurn
country:        CH
org-type:       OTHER
address:        CH-4509 Solothurn, Switzerland
abuse-c:        AC32728-RIPE
mnt-ref:        RIPE-DBM-MNT
mnt-by:         MNT-AIO
created:        2011-07-27T11:24:22Z
last-modified:  2023-07-07T06:36:16Z
source:         RIPE # Filtered

person:         Adrian Gutknecht
address:        Amt für Informatik und Organisation
address:        Ritterquai 23
address:        4509 Solothurn
phone:          +41 32 627 29 27
nic-hdl:        AG22471-RIPE
mnt-by:         SOLNET-NOC
mnt-by:         MNT-AIO
created:        2018-05-22T06:21:25Z
last-modified:  2019-12-20T08:42:07Z
source:         RIPE # Filtered

person:         Patrick Allemann
address:        Amt fuer Informatik und Organisation des Kantons Solothurn
address:        CH-4509 Solothurn, Switzerland
phone:          +41 32 627 6004
nic-hdl:        PA10154-RIPE
mnt-by:         SOLNET-NOC
mnt-by:         MNT-AIO
created:        2019-12-20T08:32:18Z
last-modified:  2019-12-20T08:32:18Z
source:         RIPE # Filtered

% Information related to '193.135.64.0/20AS29296'

route:          193.135.64.0/20
origin:         AS29296
mnt-by:         SOLNET-NOC
created:        2019-09-10T20:45:05Z
last-modified:  2019-09-10T20:45:05Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.116 (ABERDEEN)