AS43978 192.166.16.0/21 CIDR and IP Range Summary.ASN: 43978 - Atos IT Dienstleistung und Beratung GmbHHost Count: 2046Addressable IPs: 2048192.166.16.0/24192.166.17.0/24192.166.18.0/24192.166.19.0/24192.166.20.0/24192.166.21.0/24192.166.22.0/24192.166.23.0/24