% 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.
%  2025-12-24 02:22:14 (-03 -03:00)

inetnum:     2800:3c0::/32
status:      allocated
aut-num:     AS19863
owner:       Guyana Telephone & Telegraph Co.
ownerid:     GY-GTTC-LACNIC
responsible: Data Network Services (DNS)
address:     79 Brickdam, --, Georgetown
address:     -- - Georgetown - --
country:     GY
phone:       +592  2267836 [0000]
owner-c:     GAS5
tech-c:      GAS5
abuse-c:     GAS5
created:     20090807
changed:     20090807

nic-hdl:     GAS5
person:      Data Network Services
e-mail:      admin@gtt.co.gy
address:     Brickdam St,, 79, Stabroek
address:     - - Georgetown - Demerara-Mahaica
country:     GY
phone:       +592  2267836 [0000]
created:     20060712
changed:     20211230

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