AS1964 166.40.208.0/21 CIDR and IP Range Summary.ASN: 1964 - MCI TelecommunicationsHost Count: 2046Addressable IPs: 2048166.40.208.0/24166.40.209.0/24166.40.210.0/24166.40.211.0/24166.40.212.0/24166.40.213.0/24166.40.214.0/24166.40.215.0/24