AS553 193.197.216.0/21 CIDR and IP Range Summary.ASN: 553 - Universitaet StuttgartHost Count: 2046Addressable IPs: 2048193.197.216.0/24193.197.217.0/24193.197.218.0/24193.197.219.0/24193.197.220.0/24193.197.221.0/24193.197.222.0/24193.197.223.0/24