AS3491 63.221.144.0/20 CIDR and IP Range Summary.ASN: 3491 - PCCW Global Inc.Host Count: 4094Addressable IPs: 409663.221.144.0/2463.221.145.0/2463.221.146.0/2463.221.147.0/2463.221.148.0/2463.221.149.0/2463.221.150.0/2463.221.151.0/2463.221.152.0/2463.221.153.0/2463.221.154.0/2463.221.155.0/2463.221.156.0/2463.221.157.0/2463.221.158.0/2463.221.159.0/24