% 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 '203.171.64.0 - 203.171.95.255'

% Abuse contact for '203.171.64.0 - 203.171.95.255' is 'abuse@netvisao.pt'

inetnum:        203.171.64.0 - 203.171.95.255
netname:        PT-CABOVISAO-20041105
country:        PT
org:            ORG-Ctpc1-RIPE
admin-c:        CNT4-RIPE
tech-c:         CNT4-RIPE
remarks:        INFRA-AW
remarks:        IMPORTANT: To report intrusion attempts, hacking,
remarks:        IMPORTANT: spamming, or other unaccepted behavior
remarks:        IMPORTANT: by a NOWO customer, please
remarks:        IMPORTANT: send a message to abuse@netvisao.pt
mnt-lower:      AS13156-MNT
mnt-routes:     AS13156-MNT
status:         ALLOCATED PA
mnt-by:         AS13156-MNT
mnt-by:         RIPE-NCC-HM-MNT
created:        2020-08-24T16:20:39Z
last-modified:  2020-08-24T16:20:39Z
source:         RIPE

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