AS3356 72.237.80.0/21 CIDR and IP Range Summary.ASN: 3356 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 204872.237.80.0/2472.237.81.0/2472.237.82.0/2472.237.83.0/2472.237.84.0/2472.237.85.0/2472.237.86.0/2472.237.87.0/24