AS17621 103.202.120.0/21 CIDR and IP Range Summary.ASN: 17621 - China Unicom Shanghai NetworkHost Count: 2046Addressable IPs: 2048103.202.120.0/24103.202.121.0/24103.202.122.0/24103.202.123.0/24103.202.124.0/24103.202.125.0/24103.202.126.0/24103.202.127.0/24