AS3900 216.166.48.0/20 CIDR and IP Range Summary.ASN: 3900 - Switch LtdHost Count: 4094Addressable IPs: 4096216.166.48.0/24216.166.49.0/24216.166.50.0/24216.166.51.0/24216.166.52.0/24216.166.53.0/24216.166.54.0/24216.166.55.0/24216.166.56.0/24216.166.57.0/24216.166.58.0/24216.166.59.0/24216.166.60.0/24216.166.61.0/24216.166.62.0/24216.166.63.0/24