AS13768 209.15.16.0/21 CIDR and IP Range Summary.ASN: 13768 - Aptum TechnologiesHost Count: 2046Addressable IPs: 2048209.15.16.0/24209.15.17.0/24209.15.18.0/24209.15.19.0/24209.15.20.0/24209.15.21.0/24209.15.22.0/24209.15.23.0/24