AS3491 63.216.48.0/21 CIDR and IP Range Summary.ASN: 3491 - PCCW Global Inc.Host Count: 2046Addressable IPs: 204863.216.48.0/2463.216.49.0/2463.216.50.0/2463.216.51.0/2463.216.52.0/2463.216.53.0/2463.216.54.0/2463.216.55.0/24