177.133.64.0/19 covers 177.133.64.0 to 177.133.95.255, 8,192 IPv4 addresses. It is announced by AS18881 (Telefônica Brasil S.A.). Every sampled address geolocates to Brazil, with 53% in Sao Paulo. It is registered to an internet service provider. 6% of sampled addresses are flagged as proxy.