AS17897 112.100.120.0/21 CIDR and IP Range Summary.ASN: 17897 - ASN for Heilongjiang Provincial Net of CTHost Count: 2046Addressable IPs: 2048112.100.120.0/24112.100.121.0/24112.100.122.0/24112.100.123.0/24112.100.124.0/24112.100.125.0/24112.100.126.0/24112.100.127.0/24