AS28577 138.99.52.0/22 CIDR and IP Range Summary.ASN: 28577 - Azevedo e Floriani Telecomunicacoes Ltda.Host Count: 1022Addressable IPs: 1024138.99.52.0/24138.99.53.0/24138.99.54.0/24138.99.55.0/24