AS3356 216.142.144.0/21 CIDR and IP Range Summary.ASN: 3356 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 2048216.142.144.0/24216.142.145.0/24216.142.146.0/24216.142.147.0/24216.142.148.0/24216.142.149.0/24216.142.150.0/24216.142.151.0/24