AS3356 72.237.8.0/21 CIDR and IP Range Summary.ASN: 3356 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 204872.237.8.0/2472.237.9.0/2472.237.10.0/2472.237.11.0/2472.237.12.0/2472.237.13.0/2472.237.14.0/2472.237.15.0/24