AS6453 180.87.16.0/21 CIDR and IP Range Summary.ASN: 6453 - Tata Communications (America) IncHost Count: 2046Addressable IPs: 2048180.87.16.0/24180.87.17.0/24180.87.18.0/24180.87.19.0/24180.87.20.0/24180.87.21.0/24180.87.22.0/24180.87.23.0/24