% 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://apps.db.ripe.net/docs/HTML-Terms-And-Conditions

% 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

organisation:   ORG-Ctpc1-RIPE
org-name:       NOWO COMMUNICATIONS, S.A.
country:        PT
org-type:       LIR
address:        Alameda dos Oceanos, LT 2.11.01 E
                Edifício Lisboa ? Parque das Nações
address:        1998-035
address:        Lisboa
address:        PORTUGAL
phone:          +351210801080
fax-no:         +351210801005
abuse-c:        AR13679-RIPE
admin-c:        JF1169-RIPE
admin-c:        AL3206-RIPE
admin-c:        JR2638-RIPE
admin-c:        LP1252-RIPE
mnt-ref:        AS13156-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MNT-JR2638-RIPE
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS13156-MNT
created:        2004-04-17T11:48:50Z
last-modified:  2021-05-11T18:07:28Z
source:         RIPE # Filtered

role:           NOWO Network Team
address:        NOWO COMMUNICATIONS, S.A.
address:        Lugar de pocos
address:        Palmela
address:        Portugal
phone:          +351 21 080 10 80
fax-no:         +351 21 080 10 01
abuse-mailbox:  abuse@netvisao.pt
admin-c:        AL3206-RIPE
admin-c:        LP1252-RIPE
admin-c:        JR2638-RIPE
tech-c:         LP1252-RIPE
tech-c:         AL3206-RIPE
tech-c:         JR2638-RIPE
nic-hdl:        CNT4-RIPE
mnt-by:         AS13156-MNT
created:        2003-12-12T22:40:41Z
last-modified:  2018-02-12T10:13:17Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.111 (SHETLAND)

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