AS55 128.91.220.0/24 CIDR and IP Range Summary.ASN: 55 - University of PennsylvaniaHost Count: 254Addressable IPs: 256 128.91.220.0128.91.220.1128.91.220.2128.91.220.3128.91.220.4128.91.220.5128.91.220.6128.91.220.7128.91.220.8128.91.220.9128.91.220.10128.91.220.11128.91.220.12128.91.220.13128.91.220.14128.91.220.15128.91.220.16128.91.220.17128.91.220.18128.91.220.19128.91.220.20128.91.220.21128.91.220.22128.91.220.23128.91.220.24128.91.220.25128.91.220.26128.91.220.27128.91.220.28128.91.220.29128.91.220.30128.91.220.31128.91.220.32128.91.220.33128.91.220.34128.91.220.35128.91.220.36128.91.220.37128.91.220.38128.91.220.39128.91.220.40128.91.220.41128.91.220.42128.91.220.43128.91.220.44128.91.220.45128.91.220.46128.91.220.47128.91.220.48128.91.220.49128.91.220.50128.91.220.51128.91.220.52128.91.220.53128.91.220.54128.91.220.55128.91.220.56128.91.220.57128.91.220.58128.91.220.59128.91.220.60128.91.220.61128.91.220.62128.91.220.63128.91.220.64128.91.220.65128.91.220.66128.91.220.67128.91.220.68128.91.220.69128.91.220.70128.91.220.71128.91.220.72128.91.220.73128.91.220.74128.91.220.75128.91.220.76128.91.220.77128.91.220.78128.91.220.79128.91.220.80128.91.220.81128.91.220.82128.91.220.83128.91.220.84128.91.220.85128.91.220.86128.91.220.87128.91.220.88128.91.220.89128.91.220.90128.91.220.91128.91.220.92128.91.220.93128.91.220.94128.91.220.95128.91.220.96128.91.220.97128.91.220.98128.91.220.99128.91.220.100128.91.220.101128.91.220.102128.91.220.103128.91.220.104128.91.220.105128.91.220.106128.91.220.107128.91.220.108128.91.220.109128.91.220.110128.91.220.111128.91.220.112128.91.220.113128.91.220.114128.91.220.115128.91.220.116128.91.220.117128.91.220.118128.91.220.119128.91.220.120128.91.220.121128.91.220.122128.91.220.123128.91.220.124128.91.220.125128.91.220.126128.91.220.127128.91.220.128128.91.220.129128.91.220.130128.91.220.131128.91.220.132128.91.220.133128.91.220.134128.91.220.135128.91.220.136128.91.220.137128.91.220.138128.91.220.139128.91.220.140128.91.220.141128.91.220.142128.91.220.143128.91.220.144128.91.220.145128.91.220.146128.91.220.147128.91.220.148128.91.220.149128.91.220.150128.91.220.151128.91.220.152128.91.220.153128.91.220.154128.91.220.155128.91.220.156128.91.220.157128.91.220.158128.91.220.159128.91.220.160128.91.220.161128.91.220.162128.91.220.163128.91.220.164128.91.220.165128.91.220.166128.91.220.167128.91.220.168128.91.220.169128.91.220.170128.91.220.171128.91.220.172128.91.220.173128.91.220.174128.91.220.175128.91.220.176128.91.220.177128.91.220.178128.91.220.179128.91.220.180128.91.220.181128.91.220.182128.91.220.183128.91.220.184128.91.220.185128.91.220.186128.91.220.187128.91.220.188128.91.220.189128.91.220.190128.91.220.191128.91.220.192128.91.220.193128.91.220.194128.91.220.195128.91.220.196128.91.220.197128.91.220.198128.91.220.199128.91.220.200128.91.220.201128.91.220.202128.91.220.203128.91.220.204128.91.220.205128.91.220.206128.91.220.207128.91.220.208128.91.220.209128.91.220.210128.91.220.211128.91.220.212128.91.220.213128.91.220.214128.91.220.215128.91.220.216128.91.220.217128.91.220.218128.91.220.219128.91.220.220128.91.220.221128.91.220.222128.91.220.223128.91.220.224128.91.220.225128.91.220.226128.91.220.227128.91.220.228128.91.220.229128.91.220.230128.91.220.231128.91.220.232128.91.220.233128.91.220.234128.91.220.235128.91.220.236128.91.220.237128.91.220.238128.91.220.239128.91.220.240128.91.220.241128.91.220.242128.91.220.243128.91.220.244128.91.220.245128.91.220.246128.91.220.247128.91.220.248128.91.220.249128.91.220.250128.91.220.251128.91.220.252128.91.220.253128.91.220.254128.91.220.255