AS3356 8.28.192.0/21 CIDR and IP Range Summary.ASN: 3356 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 20488.28.192.0/248.28.193.0/248.28.194.0/248.28.195.0/248.28.196.0/248.28.197.0/248.28.198.0/248.28.199.0/24