% APNIC found the following authoritative answer from: whois.lacnic.net

% IP Client: 203.119.106.26
 
% Joint Whois - whois.lacnic.net
%  This server accepts single ASN, IPv4 or IPv6 queries

% LACNIC resource: whois.lacnic.net

% Copyright LACNIC lacnic.net
%  The data below is provided for information purposes
%  and to assist persons in obtaining information about or
%  related to AS and IP numbers registrations
%  By submitting a whois query, you agree to use this data
%  only for lawful purposes.
%  2026-10-03 20:16:46 (-03 -03:00)

inetnum:     200.63.64.0/20
status:      reallocated
aut-num:     AS52431
owner:       CyberWave S.A.
ownerid:     AR-CYBE6-LACNIC
responsible: Sergio Luis Pidutti
address:     Santiago del Estero, 1741, 7º Of A
address:     7600 - Mar del Plata - BA
country:     AR
phone:       +54 223 410 [4400]
owner-c:     GRC7
tech-c:      GRC7
abuse-c:     GRC7
inetrev:     200.63.64.0/20
nserver:     NS1-AR.AS52431.NET
nsstat:      20261001 AA
nslastaa:    20261001
nserver:     NS1-US.AS52431.NET [lame - not published]
nsstat:      20261001 TIMEOUT
nslastaa:    20260820
nserver:     NS1-EU.AS52431.NET
nsstat:      20261001 AA
nslastaa:    20261001
created:     20170131
changed:     20170131
inetnum-up:  200.63.64.0/19

nic-hdl:     GRC7
person:      Marcelo Sosa Lugones
e-mail:      noc@cybertech.com.ar
address:     Magallanes, 3019, Local 1
address:     7600 - Mar del Plata - BA
country:     AR
phone:       +54  2232234619800 [0000]
created:     20111123
changed:     20220131

% whois.lacnic.net accepts only direct match queries.
% Types of queries are: POCs, ownerid, CIDR blocks, IP
% and AS numbers.