AS6453 63.243.240.0/21 CIDR and IP Range Summary.ASN: 6453 - Tata Communications (America) IncHost Count: 2046Addressable IPs: 204863.243.240.0/2463.243.241.0/2463.243.242.0/2463.243.243.0/2463.243.244.0/2463.243.245.0/2463.243.246.0/2463.243.247.0/24