191.251.32.0/20 covers 191.251.32.0 to 191.251.47.255, 4,096 IPv4 addresses. It is announced by AS18881 (Telefônica Brasil S.A.). Every sampled address geolocates to Brazil, with 100% in Florianopolis. It is registered to an internet service provider. None of the sampled addresses are flagged as VPN, proxy or Tor.