AS3356 8.72.0.0/13 CIDR and IP Range Summary.ASN: 3356 - Level 3 Parent LLCHost Count: 524286Addressable IPs: 5242888.72.0.0/168.72.0.0/168.72.0.0/168.72.0.0/168.72.0.0/168.72.0.0/168.72.0.0/168.72.0.0/16