AS28573 191.191.144.0/21 CIDR and IP Range Summary.ASN: 28573 - Claro NXT Telecomunicacoes LtdaHost Count: 2046Addressable IPs: 2048191.191.144.0/24191.191.145.0/24191.191.146.0/24191.191.147.0/24191.191.148.0/24191.191.149.0/24191.191.150.0/24191.191.151.0/24