191.35.128.0/20 covers 191.35.128.0 to 191.35.143.255, 4,096 IPv4 addresses. It is announced by AS18881 (Telefônica Brasil S.A.). Every sampled address geolocates to Brazil, with 75% in Sao Paulo. It is registered to an internet service provider. 3% of sampled addresses are flagged as proxy.