AS3900 209.99.23.16/28 CIDR and IP Range Summary.ASN: 3900 - Switch LtdHost Count: 14Addressable IPs: 16 209.99.23.17209.99.23.18209.99.23.19209.99.23.20209.99.23.21209.99.23.22209.99.23.23209.99.23.24209.99.23.25209.99.23.26209.99.23.27209.99.23.28209.99.23.29209.99.23.30209.99.23.31209.99.23.32