AS7552 171.243.152.0/21 CIDR and IP Range Summary.ASN: 7552 - Viettel GroupHost Count: 2046Addressable IPs: 2048171.243.152.0/24171.243.153.0/24171.243.154.0/24171.243.155.0/24171.243.156.0/24171.243.157.0/24171.243.158.0/24171.243.159.0/24