AS17645 116.51.128.0/21 CIDR and IP Range Summary.ASN: 17645 - NTT Singapore Pte LtdHost Count: 2046Addressable IPs: 2048116.51.128.0/24116.51.129.0/24116.51.130.0/24116.51.131.0/24116.51.132.0/24116.51.133.0/24116.51.134.0/24116.51.135.0/24