AS13768 83.137.128.0/21 CIDR and IP Range Summary.ASN: 13768 - Aptum TechnologiesHost Count: 2046Addressable IPs: 204883.137.128.0/2483.137.129.0/2483.137.130.0/2483.137.131.0/2483.137.132.0/2483.137.133.0/2483.137.134.0/2483.137.135.0/24