AS6453 66.198.72.0/21 CIDR and IP Range Summary.ASN: 6453 - Tata Communications (America) IncHost Count: 2046Addressable IPs: 204866.198.72.0/2466.198.73.0/2466.198.74.0/2466.198.75.0/2466.198.76.0/2466.198.77.0/2466.198.78.0/2466.198.79.0/24