AS137904 147.182.64.0/21 CIDR and IP Range Summary.ASN: 137904 - Black & Veatch SEA Pte LtdHost Count: 2046Addressable IPs: 2048147.182.64.0/24147.182.65.0/24147.182.66.0/24147.182.67.0/24147.182.68.0/24147.182.69.0/24147.182.70.0/24147.182.71.0/24