AS13768 66.199.136.0/21 CIDR and IP Range Summary.ASN: 13768 - Aptum TechnologiesHost Count: 2046Addressable IPs: 204866.199.136.0/2466.199.137.0/2466.199.138.0/2466.199.139.0/2466.199.140.0/2466.199.141.0/2466.199.142.0/2466.199.143.0/24