AS28130 186.251.144.0/21 CIDR and IP Range Summary.ASN: 28130 - Certto Telecomunicacoes Ltda Epp.Host Count: 2046Addressable IPs: 2048186.251.144.0/24186.251.145.0/24186.251.146.0/24186.251.147.0/24186.251.148.0/24186.251.149.0/24186.251.150.0/24186.251.151.0/24