AS6421 66.198.88.0/21 CIDR and IP Range Summary.ASN: 6421 - Tata Communications (America) IncHost Count: 2046Addressable IPs: 204866.198.88.0/2466.198.89.0/2466.198.90.0/2466.198.91.0/2466.198.92.0/2466.198.93.0/2466.198.94.0/2466.198.95.0/24