AS400666 57.138.160.0/21 CIDR and IP Range Summary.ASN: 400666 - DOBSON-ASN-02Host Count: 2046Addressable IPs: 204857.138.160.0/2457.138.161.0/2457.138.162.0/2457.138.163.0/2457.138.164.0/2457.138.165.0/2457.138.166.0/2457.138.167.0/24