AS3378 146.1.40.0/21 CIDR and IP Range Summary.ASN: 3378 - MCIHost Count: 2046Addressable IPs: 2048146.1.40.0/24146.1.41.0/24146.1.42.0/24146.1.43.0/24146.1.44.0/24146.1.45.0/24146.1.46.0/24146.1.47.0/24