AS4755 121.244.144.0/20 CIDR and IP Range Summary.ASN: 4755 - Tata Communications Formerly VSNL is Leading ISPHost Count: 4094Addressable IPs: 4096121.244.144.0/24121.244.145.0/24121.244.146.0/24121.244.147.0/24121.244.148.0/24121.244.149.0/24121.244.150.0/24121.244.151.0/24121.244.152.0/24121.244.153.0/24121.244.154.0/24121.244.155.0/24121.244.156.0/24121.244.157.0/24121.244.158.0/24121.244.159.0/24