This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS266612 4 More Specifics 4 Total Advertisements YSSY TELECOMUNICACOES S.A., BR
45.237.64.0/24 45.237.64.0/22
45.237.66.0/23 45.237.64.0/22
45.237.66.0/24 45.237.64.0/22
189.125.32.64/26 189.125.0.0/16
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 45.237.64.0/24 Announced
whois: 402590
IANA has recorded AS266612 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS266612\n % IP Client: 2401:2000:6660::13
% Copyright (c) Nic.br - Use of this data is governed by the Use and
% Privacy Policy at https://registro.br/upp . Distribution,
% commercialization, reproduction, and use for advertising or similar
% purposes are expressly prohibited.
% 2026-06-04T14:00:05-03:00 - 2401:2000:6660::13
% No match for AS266612
% Security and mail abuse issues should also be addressed to cert.br,
% respectivelly to cert@cert.br and mail-abuse@cert.br
%
% whois.registro.br only accepts exact match queries for domains,
% registrants, contacts, tickets, providers, IPs, and ASNs.