AS49 129.6.21.0/24 CIDR and IP Range Summary.ASN: 49 - US National Institute of Standards & TechnologyHost Count: 254Addressable IPs: 256 129.6.21.0129.6.21.1129.6.21.2129.6.21.3129.6.21.4129.6.21.5129.6.21.6129.6.21.7129.6.21.8129.6.21.9129.6.21.10129.6.21.11129.6.21.12129.6.21.13129.6.21.14129.6.21.15129.6.21.16129.6.21.17129.6.21.18129.6.21.19129.6.21.20129.6.21.21129.6.21.22129.6.21.23129.6.21.24129.6.21.25129.6.21.26129.6.21.27129.6.21.28129.6.21.29129.6.21.30129.6.21.31129.6.21.32129.6.21.33129.6.21.34129.6.21.35129.6.21.36129.6.21.37129.6.21.38129.6.21.39129.6.21.40129.6.21.41129.6.21.42129.6.21.43129.6.21.44129.6.21.45129.6.21.46129.6.21.47129.6.21.48129.6.21.49129.6.21.50129.6.21.51129.6.21.52129.6.21.53129.6.21.54129.6.21.55129.6.21.56129.6.21.57129.6.21.58129.6.21.59129.6.21.60129.6.21.61129.6.21.62129.6.21.63129.6.21.64129.6.21.65129.6.21.66129.6.21.67129.6.21.68129.6.21.69129.6.21.70129.6.21.71129.6.21.72129.6.21.73129.6.21.74129.6.21.75129.6.21.76129.6.21.77129.6.21.78129.6.21.79129.6.21.80129.6.21.81129.6.21.82129.6.21.83129.6.21.84129.6.21.85129.6.21.86129.6.21.87129.6.21.88129.6.21.89129.6.21.90129.6.21.91129.6.21.92129.6.21.93129.6.21.94129.6.21.95129.6.21.96129.6.21.97129.6.21.98129.6.21.99129.6.21.100129.6.21.101129.6.21.102129.6.21.103129.6.21.104129.6.21.105129.6.21.106129.6.21.107129.6.21.108129.6.21.109129.6.21.110129.6.21.111129.6.21.112129.6.21.113129.6.21.114129.6.21.115129.6.21.116129.6.21.117129.6.21.118129.6.21.119129.6.21.120129.6.21.121129.6.21.122129.6.21.123129.6.21.124129.6.21.125129.6.21.126129.6.21.127129.6.21.128129.6.21.129129.6.21.130129.6.21.131129.6.21.132129.6.21.133129.6.21.134129.6.21.135129.6.21.136129.6.21.137129.6.21.138129.6.21.139129.6.21.140129.6.21.141129.6.21.142129.6.21.143129.6.21.144129.6.21.145129.6.21.146129.6.21.147129.6.21.148129.6.21.149129.6.21.150129.6.21.151129.6.21.152129.6.21.153129.6.21.154129.6.21.155129.6.21.156129.6.21.157129.6.21.158129.6.21.159129.6.21.160129.6.21.161129.6.21.162129.6.21.163129.6.21.164129.6.21.165129.6.21.166129.6.21.167129.6.21.168129.6.21.169129.6.21.170129.6.21.171129.6.21.172129.6.21.173129.6.21.174129.6.21.175129.6.21.176129.6.21.177129.6.21.178129.6.21.179129.6.21.180129.6.21.181129.6.21.182129.6.21.183129.6.21.184129.6.21.185129.6.21.186129.6.21.187129.6.21.188129.6.21.189129.6.21.190129.6.21.191129.6.21.192129.6.21.193129.6.21.194129.6.21.195129.6.21.196129.6.21.197129.6.21.198129.6.21.199129.6.21.200129.6.21.201129.6.21.202129.6.21.203129.6.21.204129.6.21.205129.6.21.206129.6.21.207129.6.21.208129.6.21.209129.6.21.210129.6.21.211129.6.21.212129.6.21.213129.6.21.214129.6.21.215129.6.21.216129.6.21.217129.6.21.218129.6.21.219129.6.21.220129.6.21.221129.6.21.222129.6.21.223129.6.21.224129.6.21.225129.6.21.226129.6.21.227129.6.21.228129.6.21.229129.6.21.230129.6.21.231129.6.21.232129.6.21.233129.6.21.234129.6.21.235129.6.21.236129.6.21.237129.6.21.238129.6.21.239129.6.21.240129.6.21.241129.6.21.242129.6.21.243129.6.21.244129.6.21.245129.6.21.246129.6.21.247129.6.21.248129.6.21.249129.6.21.250129.6.21.251129.6.21.252129.6.21.253129.6.21.254129.6.21.255