AS3356 216.143.248.0/21 CIDR and IP Range Summary.ASN: 3356 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 2048216.143.248.0/24216.143.249.0/24216.143.250.0/24216.143.251.0/24216.143.252.0/24216.143.253.0/24216.143.254.0/24216.143.255.0/24