131,072
IPv4 Addresses
2
Network Blocks (/16)
Duke University (AS13371) is a network operator registered in 🇺🇸 United States. It announces approximately 131,072 IPv4 addresses across 2 /16 network blocks. The complete list of network ranges is shown below — click any address to view its full geolocation and network report.
📡 IP Address Ranges
2 blocks · 512 /24 networks152.3.0.0152.3.1.0152.3.2.0152.3.3.0152.3.4.0152.3.5.0152.3.6.0152.3.7.0152.3.8.0152.3.9.0152.3.10.0152.3.11.0152.3.12.0152.3.13.0152.3.14.0152.3.15.0152.3.16.0152.3.17.0152.3.18.0152.3.19.0152.3.20.0152.3.21.0152.3.22.0152.3.23.0152.3.24.0152.3.25.0152.3.26.0152.3.27.0152.3.28.0152.3.29.0152.3.30.0152.3.31.0152.3.32.0152.3.33.0152.3.34.0152.3.35.0152.3.36.0152.3.37.0152.3.38.0152.3.39.0152.3.40.0152.3.41.0152.3.42.0152.3.43.0152.3.44.0152.3.45.0152.3.46.0152.3.47.0152.3.48.0152.3.49.0152.3.50.0152.3.51.0152.3.52.0152.3.53.0152.3.54.0152.3.55.0152.3.56.0152.3.57.0152.3.58.0152.3.59.0152.3.60.0152.3.61.0152.3.62.0152.3.63.0152.3.64.0152.3.65.0152.3.66.0152.3.67.0152.3.68.0152.3.69.0152.3.70.0152.3.71.0152.3.72.0152.3.73.0152.3.74.0152.3.75.0152.3.76.0152.3.77.0152.3.78.0152.3.79.0152.3.80.0152.3.81.0152.3.82.0152.3.83.0152.3.84.0152.3.85.0152.3.86.0152.3.87.0152.3.88.0152.3.89.0152.3.90.0152.3.91.0152.3.92.0152.3.93.0152.3.94.0152.3.95.0152.3.96.0152.3.97.0152.3.98.0152.3.99.0152.3.100.0152.3.101.0152.3.102.0152.3.103.0152.3.104.0152.3.105.0152.3.106.0152.3.107.0152.3.108.0152.3.109.0152.3.110.0152.3.111.0152.3.112.0152.3.113.0152.3.114.0152.3.115.0152.3.116.0152.3.117.0152.3.118.0152.3.119.0152.3.120.0152.3.121.0152.3.122.0152.3.123.0152.3.124.0152.3.125.0152.3.126.0152.3.127.0152.3.128.0152.3.129.0152.3.130.0152.3.131.0152.3.132.0152.3.133.0152.3.134.0152.3.135.0152.3.136.0152.3.137.0152.3.138.0152.3.139.0152.3.140.0152.3.141.0152.3.142.0152.3.143.0152.3.144.0152.3.145.0152.3.146.0152.3.147.0152.3.148.0152.3.149.0152.3.150.0152.3.151.0152.3.152.0152.3.153.0152.3.154.0152.3.155.0152.3.156.0152.3.157.0152.3.158.0152.3.159.0152.3.160.0152.3.161.0152.3.162.0152.3.163.0152.3.164.0152.3.165.0152.3.166.0152.3.167.0152.3.168.0152.3.169.0152.3.170.0152.3.171.0152.3.172.0152.3.173.0152.3.174.0152.3.175.0152.3.176.0152.3.177.0152.3.178.0152.3.179.0152.3.180.0152.3.181.0152.3.182.0152.3.183.0152.3.184.0152.3.185.0152.3.186.0152.3.187.0152.3.188.0152.3.189.0152.3.190.0152.3.191.0152.3.192.0152.3.193.0152.3.194.0152.3.195.0152.3.196.0152.3.197.0152.3.198.0152.3.199.0152.3.200.0152.3.201.0152.3.202.0152.3.203.0152.3.204.0152.3.205.0152.3.206.0152.3.207.0152.3.208.0152.3.209.0152.3.210.0152.3.211.0152.3.212.0152.3.213.0152.3.214.0152.3.215.0152.3.216.0152.3.217.0152.3.218.0152.3.219.0152.3.220.0152.3.221.0152.3.222.0152.3.223.0152.3.224.0152.3.225.0152.3.226.0152.3.227.0152.3.228.0152.3.229.0152.3.230.0152.3.231.0152.3.232.0152.3.233.0152.3.234.0152.3.235.0152.3.236.0152.3.237.0152.3.238.0152.3.239.0152.3.240.0152.3.241.0152.3.242.0152.3.243.0152.3.244.0152.3.245.0152.3.246.0152.3.247.0152.3.248.0152.3.249.0152.3.250.0152.3.251.0152.3.252.0152.3.253.0152.3.254.0152.3.255.0152.16.0.0152.16.1.0152.16.2.0152.16.3.0152.16.4.0152.16.5.0152.16.6.0152.16.7.0152.16.8.0152.16.9.0152.16.10.0152.16.11.0152.16.12.0152.16.13.0152.16.14.0152.16.15.0152.16.16.0152.16.17.0152.16.18.0152.16.19.0152.16.20.0152.16.21.0152.16.22.0152.16.23.0152.16.24.0152.16.25.0152.16.26.0152.16.27.0152.16.28.0152.16.29.0152.16.30.0152.16.31.0152.16.32.0152.16.33.0152.16.34.0152.16.35.0152.16.36.0152.16.37.0152.16.38.0152.16.39.0152.16.40.0152.16.41.0152.16.42.0152.16.43.0152.16.44.0152.16.45.0152.16.46.0152.16.47.0152.16.48.0152.16.49.0152.16.50.0152.16.51.0152.16.52.0152.16.53.0152.16.54.0152.16.55.0152.16.56.0152.16.57.0152.16.58.0152.16.59.0152.16.60.0152.16.61.0152.16.62.0152.16.63.0152.16.64.0152.16.65.0152.16.66.0152.16.67.0152.16.68.0152.16.69.0152.16.70.0152.16.71.0152.16.72.0152.16.73.0152.16.74.0152.16.75.0152.16.76.0152.16.77.0152.16.78.0152.16.79.0152.16.80.0152.16.81.0152.16.82.0152.16.83.0152.16.84.0152.16.85.0152.16.86.0152.16.87.0152.16.88.0152.16.89.0152.16.90.0152.16.91.0152.16.92.0152.16.93.0152.16.94.0152.16.95.0152.16.96.0152.16.97.0152.16.98.0152.16.99.0152.16.100.0152.16.101.0152.16.102.0152.16.103.0152.16.104.0152.16.105.0152.16.106.0152.16.107.0152.16.108.0152.16.109.0152.16.110.0152.16.111.0152.16.112.0152.16.113.0152.16.114.0152.16.115.0152.16.116.0152.16.117.0152.16.118.0152.16.119.0152.16.120.0152.16.121.0152.16.122.0152.16.123.0152.16.124.0152.16.125.0152.16.126.0152.16.127.0152.16.128.0152.16.129.0152.16.130.0152.16.131.0152.16.132.0152.16.133.0152.16.134.0152.16.135.0152.16.136.0152.16.137.0152.16.138.0152.16.139.0152.16.140.0152.16.141.0152.16.142.0152.16.143.0152.16.144.0152.16.145.0152.16.146.0152.16.147.0152.16.148.0152.16.149.0152.16.150.0152.16.151.0152.16.152.0152.16.153.0152.16.154.0152.16.155.0152.16.156.0152.16.157.0152.16.158.0152.16.159.0152.16.160.0152.16.161.0152.16.162.0152.16.163.0152.16.164.0152.16.165.0152.16.166.0152.16.167.0152.16.168.0152.16.169.0152.16.170.0152.16.171.0152.16.172.0152.16.173.0152.16.174.0152.16.175.0152.16.176.0152.16.177.0152.16.178.0152.16.179.0152.16.180.0152.16.181.0152.16.182.0152.16.183.0152.16.184.0152.16.185.0152.16.186.0152.16.187.0152.16.188.0152.16.189.0152.16.190.0152.16.191.0152.16.192.0152.16.193.0152.16.194.0152.16.195.0152.16.196.0152.16.197.0152.16.198.0152.16.1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