AS3356 66.243.128.0/21 CIDR and IP Range Summary.ASN: 3356 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 204866.243.128.0/2466.243.129.0/2466.243.130.0/2466.243.131.0/2466.243.132.0/2466.243.133.0/2466.243.134.0/2466.243.135.0/24