AS3356 4.78.16.0/21 CIDR and IP Range Summary.ASN: 3356 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 20484.78.16.0/244.78.17.0/244.78.18.0/244.78.19.0/244.78.20.0/244.78.21.0/244.78.22.0/244.78.23.0/24