AS3900 209.99.0.0/20 CIDR and IP Range Summary.ASN: 3900 - Switch LtdHost Count: 4094Addressable IPs: 4096209.99.0.0/24209.99.1.0/24209.99.2.0/24209.99.3.0/24209.99.4.0/24209.99.5.0/24209.99.6.0/24209.99.7.0/24209.99.8.0/24209.99.9.0/24209.99.10.0/24209.99.11.0/24209.99.12.0/24209.99.13.0/24209.99.14.0/24209.99.15.0/24