% 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.
%  2025-12-23 17:16:48 (-03 -03:00)

inetnum:     2800:300::/32
status:      allocated
aut-num:     N/A
owner:       ENTEL CHILE S.A.
ownerid:     CL-ECSA-LACNIC
responsible: ENTEL CHILE S.A.
address:     Andrés Bello, 2687, 
address:     56 - Santiago - 
country:     CL
phone:       +56 2 3600123
owner-c:     CLS4
tech-c:      CLS4
abuse-c:     CLS4
inetrev:     2800:300::/32
nserver:     POLUX.ENTELCHILE.NET
nsstat:      20251218 AA
nslastaa:    20251218
nserver:     CASTOR.ENTELCHILE.NET
nsstat:      20251218 AA
nslastaa:    20251218
created:     20090130
changed:     20210428

nic-hdl:     CLS4
person:      Cristian Escobar
e-mail:      cescobar@entel.cl
address:     Amunategui, 20, -
address:     4254 - Santiago - 
country:     CL
phone:       +56  23600123 [0000]
created:     20050311
changed:     20231012

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