AS6421 66.198.48.0/21 CIDR and IP Range Summary.ASN: 6421 - Tata Communications (America) IncHost Count: 2046Addressable IPs: 204866.198.48.0/2466.198.49.0/2466.198.50.0/2466.198.51.0/2466.198.52.0/2466.198.53.0/2466.198.54.0/2466.198.55.0/24