AS9021 213.143.228.0/22 CIDR and IP Range Summary.ASN: 9021 - Is Net Elektonik Bilgi Uretim Dagitim Ticaret ve Iletisim Hizmetleri A.S.Host Count: 1022Addressable IPs: 1024213.143.228.0/24213.143.229.0/24213.143.230.0/24213.143.231.0/24