AS6453 63.243.168.0/21 CIDR and IP Range Summary.ASN: 6453 - Tata Communications (America) IncHost Count: 2046Addressable IPs: 204863.243.168.0/2463.243.169.0/2463.243.170.0/2463.243.171.0/2463.243.172.0/2463.243.173.0/2463.243.174.0/2463.243.175.0/24