AS15667 213.166.104.0/21 CIDR and IP Range Summary.ASN: 15667 - IDT CorporationHost Count: 2046Addressable IPs: 2048213.166.104.0/24213.166.105.0/24213.166.106.0/24213.166.107.0/24213.166.108.0/24213.166.109.0/24213.166.110.0/24213.166.111.0/24