AS28573 187.123.240.0/21 CIDR and IP Range Summary.ASN: 28573 - Claro NXT Telecomunicacoes LtdaHost Count: 2046Addressable IPs: 2048187.123.240.0/24187.123.241.0/24187.123.242.0/24187.123.243.0/24187.123.244.0/24187.123.245.0/24187.123.246.0/24187.123.247.0/24