170.81.128.0/23 covers 170.81.128.0 to 170.81.129.255, 512 IPv4 addresses. It is announced by AS28330 (IFTNET Telecomunicacoes Ltda). Every sampled address geolocates to Brazil, with 100% in Sao Jose do Rio Preto. 97% of it is registered to a business. None of the sampled addresses are flagged as VPN, proxy or Tor.