% 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 '193.83.0.0 - 193.83.255.255'

% Abuse contact for '193.83.0.0 - 193.83.255.255' is 'abuse@a1.at'

inetnum:        193.83.0.0 - 193.83.255.255
netname:        AT-TELEKOM-193-83
country:        AT
org:            ORG-TAA1-RIPE
admin-c:        HMH25-RIPE
tech-c:         HMH25-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS8447-MNT
mnt-lower:      AS8447-MNT
mnt-domains:    AS8447-MNT
mnt-routes:     AS8447-MNT
created:        2002-08-20T10:27:30Z
last-modified:  2022-03-29T09:06:54Z
source:         RIPE # Filtered

% Information related to '193.83.0.0/16AS8447'

route:          193.83.0.0/16
descr:          A1 Telekom Austria AG
origin:         AS8447
org:            ORG-TAA1-RIPE
mnt-by:         AS8447-MNT
created:        2023-05-03T10:26:44Z
last-modified:  2023-05-03T10:26:44Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.124.1 (ABERDEEN)