AS3356 204.128.16.0/21 CIDR and IP Range Summary.ASN: 3356 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 2048204.128.16.0/24204.128.17.0/24204.128.18.0/24204.128.19.0/24204.128.20.0/24204.128.21.0/24204.128.22.0/24204.128.23.0/24