AS3356 8.21.192.0/20 CIDR and IP Range Summary.ASN: 3356 - Level 3 Parent LLCHost Count: 4094Addressable IPs: 40968.21.192.0/248.21.193.0/248.21.194.0/248.21.195.0/248.21.196.0/248.21.197.0/248.21.198.0/248.21.199.0/248.21.200.0/248.21.201.0/248.21.202.0/248.21.203.0/248.21.204.0/248.21.205.0/248.21.206.0/248.21.207.0/24