AS52579 204.157.136.0/21 CIDR and IP Range Summary.ASN: 52579 - Noroestecom Telecomunicacoes LtdaHost Count: 2046Addressable IPs: 2048204.157.136.0/24204.157.137.0/24204.157.138.0/24204.157.139.0/24204.157.140.0/24204.157.141.0/24204.157.142.0/24204.157.143.0/24