AS7552 171.228.0.0/21 CIDR and IP Range Summary.ASN: 7552 - Viettel GroupHost Count: 2046Addressable IPs: 2048171.228.0.0/24171.228.1.0/24171.228.2.0/24171.228.3.0/24171.228.4.0/24171.228.5.0/24171.228.6.0/24171.228.7.0/24