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

% IP Client: 203.119.110.26
 
% 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.
%  2026-01-20 15:17:00 (-03 -03:00)

inetnum:     200.45.54.0/24
status:      reallocated
aut-num:     AS7303
owner:       UNIVERSIDAD NACIONAL DEL NORDESTE
ownerid:     AR-UNNO1-LACNIC
responsible: Julio H. Giménez
address:     25 de Mayo, 868, -
address:     3400 - Corrientes - Corrientes
country:     AR
phone:       +54  3794439629 [2003]
owner-c:     FMC
tech-c:      FMC
abuse-c:     FMC
created:     20130221
changed:     20130221
inetnum-up:  200.45.0.0/16

nic-hdl:     FMC
person:      Julio Horacio Giménez
e-mail:      jgimenez@unne.edu.ar
address:     25 de Mayo, 868, -
address:     3400 - Corrientes - ct
country:     AR
phone:       +54  3794439629 [2003]
created:     20060223
changed:     20211001

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