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This list provides the ranges and Subaddresses for the Network 12.21.0.0/

12.0.0.0/8 IP Tree for Parent Network / Address Space -

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12.21.0.0 Single IP Address
12.21.0.0/24 IP Tree for Address Space
12.21.0.0/18 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.1.0 Single IP Address
12.21.1.0/24 IP Tree for Address Space


12.21.2.0 Single IP Address
12.21.2.0/24 IP Tree for Address Space


12.21.3.0 Single IP Address
12.21.3.0/24 IP Tree for Address Space


12.21.4.0 Single IP Address
12.21.4.0/24 IP Tree for Address Space


12.21.5.0 Single IP Address
12.21.5.0/24 IP Tree for Address Space


12.21.6.0 Single IP Address
12.21.6.0/24 IP Tree for Address Space


12.21.7.0 Single IP Address
12.21.7.0/24 IP Tree for Address Space


12.21.8.0 Single IP Address
12.21.8.0/24 IP Tree for Address Space


12.21.9.0 Single IP Address
12.21.9.0/24 IP Tree for Address Space


12.21.10.0 Single IP Address
12.21.10.0/24 IP Tree for Address Space


12.21.11.0 Single IP Address
12.21.11.0/24 IP Tree for Address Space


12.21.12.0 Single IP Address
12.21.12.0/24 IP Tree for Address Space


12.21.13.0 Single IP Address
12.21.13.0/24 IP Tree for Address Space


12.21.14.0 Single IP Address
12.21.14.0/24 IP Tree for Address Space


12.21.15.0 Single IP Address
12.21.15.0/24 IP Tree for Address Space


12.21.16.0 Single IP Address
12.21.16.0/24 IP Tree for Address Space


12.21.17.0 Single IP Address
12.21.17.0/24 IP Tree for Address Space


12.21.18.0 Single IP Address
12.21.18.0/24 IP Tree for Address Space


12.21.19.0 Single IP Address
12.21.19.0/24 IP Tree for Address Space


12.21.20.0 Single IP Address
12.21.20.0/24 IP Tree for Address Space


12.21.21.0 Single IP Address
12.21.21.0/24 IP Tree for Address Space


12.21.22.0 Single IP Address
12.21.22.0/24 IP Tree for Address Space


12.21.23.0 Single IP Address
12.21.23.0/24 IP Tree for Address Space


12.21.24.0 Single IP Address
12.21.24.0/24 IP Tree for Address Space


12.21.25.0 Single IP Address
12.21.25.0/24 IP Tree for Address Space


12.21.26.0 Single IP Address
12.21.26.0/24 IP Tree for Address Space


12.21.27.0 Single IP Address
12.21.27.0/24 IP Tree for Address Space


12.21.28.0 Single IP Address
12.21.28.0/24 IP Tree for Address Space


12.21.29.0 Single IP Address
12.21.29.0/24 IP Tree for Address Space


12.21.30.0 Single IP Address
12.21.30.0/24 IP Tree for Address Space


12.21.31.0 Single IP Address
12.21.31.0/24 IP Tree for Address Space


12.21.32.0 Single IP Address
12.21.32.0/24 IP Tree for Address Space


12.21.33.0 Single IP Address
12.21.33.0/24 IP Tree for Address Space


12.21.34.0 Single IP Address
12.21.34.0/24 IP Tree for Address Space


12.21.35.0 Single IP Address
12.21.35.0/24 IP Tree for Address Space


12.21.36.0 Single IP Address
12.21.36.0/24 IP Tree for Address Space


12.21.37.0 Single IP Address
12.21.37.0/24 IP Tree for Address Space


12.21.38.0 Single IP Address
12.21.38.0/24 IP Tree for Address Space


12.21.39.0 Single IP Address
12.21.39.0/24 IP Tree for Address Space


12.21.40.0 Single IP Address
12.21.40.0/24 IP Tree for Address Space


12.21.41.0 Single IP Address
12.21.41.0/24 IP Tree for Address Space


12.21.42.0 Single IP Address
12.21.42.0/24 IP Tree for Address Space


12.21.43.0 Single IP Address
12.21.43.0/24 IP Tree for Address Space


12.21.44.0 Single IP Address
12.21.44.0/24 IP Tree for Address Space


12.21.45.0 Single IP Address
12.21.45.0/24 IP Tree for Address Space


12.21.46.0 Single IP Address
12.21.46.0/24 IP Tree for Address Space


12.21.47.0 Single IP Address
12.21.47.0/24 IP Tree for Address Space


12.21.48.0 Single IP Address
12.21.48.0/24 IP Tree for Address Space


12.21.49.0 Single IP Address
12.21.49.0/24 IP Tree for Address Space


12.21.50.0 Single IP Address
12.21.50.0/24 IP Tree for Address Space


12.21.51.0 Single IP Address
12.21.51.0/24 IP Tree for Address Space


12.21.52.0 Single IP Address
12.21.52.0/24 IP Tree for Address Space


12.21.53.0 Single IP Address
12.21.53.0/24 IP Tree for Address Space


12.21.54.0 Single IP Address
12.21.54.0/24 IP Tree for Address Space


12.21.55.0 Single IP Address
12.21.55.0/24 IP Tree for Address Space


12.21.56.0 Single IP Address
12.21.56.0/24 IP Tree for Address Space


12.21.57.0 Single IP Address
12.21.57.0/24 IP Tree for Address Space


12.21.58.0 Single IP Address
12.21.58.0/24 IP Tree for Address Space


12.21.59.0 Single IP Address
12.21.59.0/24 IP Tree for Address Space


12.21.60.0 Single IP Address
12.21.60.0/24 IP Tree for Address Space


12.21.61.0 Single IP Address
12.21.61.0/24 IP Tree for Address Space


12.21.62.0 Single IP Address
12.21.62.0/24 IP Tree for Address Space


12.21.63.0 Single IP Address
12.21.63.0/24 IP Tree for Address Space


12.21.64.0 Single IP Address
12.21.64.0/24 IP Tree for Address Space
12.21.64.0/20 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.65.0 Single IP Address
12.21.65.0/24 IP Tree for Address Space


12.21.66.0 Single IP Address
12.21.66.0/24 IP Tree for Address Space


12.21.67.0 Single IP Address
12.21.67.0/24 IP Tree for Address Space


12.21.68.0 Single IP Address
12.21.68.0/24 IP Tree for Address Space


12.21.69.0 Single IP Address
12.21.69.0/24 IP Tree for Address Space


12.21.70.0 Single IP Address
12.21.70.0/24 IP Tree for Address Space


12.21.71.0 Single IP Address
12.21.71.0/24 IP Tree for Address Space


12.21.72.0 Single IP Address
12.21.72.0/24 IP Tree for Address Space


12.21.73.0 Single IP Address
12.21.73.0/24 IP Tree for Address Space


12.21.74.0 Single IP Address
12.21.74.0/24 IP Tree for Address Space


12.21.75.0 Single IP Address
12.21.75.0/24 IP Tree for Address Space


12.21.76.0 Single IP Address
12.21.76.0/24 IP Tree for Address Space


12.21.77.0 Single IP Address
12.21.77.0/24 IP Tree for Address Space


12.21.78.0 Single IP Address
12.21.78.0/24 IP Tree for Address Space


12.21.79.0 Single IP Address
12.21.79.0/24 IP Tree for Address Space


12.21.80.0 Single IP Address
12.21.80.0/24 IP Tree for Address Space
12.21.80.0/21 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.81.0 Single IP Address
12.21.81.0/24 IP Tree for Address Space


12.21.82.0 Single IP Address
12.21.82.0/24 IP Tree for Address Space


12.21.83.0 Single IP Address
12.21.83.0/24 IP Tree for Address Space


12.21.84.0 Single IP Address
12.21.84.0/24 IP Tree for Address Space


12.21.85.0 Single IP Address
12.21.85.0/24 IP Tree for Address Space


12.21.86.0 Single IP Address
12.21.86.0/24 IP Tree for Address Space


12.21.87.0 Single IP Address
12.21.87.0/24 IP Tree for Address Space


12.21.88.0 Single IP Address
12.21.88.0/24 IP Tree for Address Space
12.21.88.0/22 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.89.0 Single IP Address
12.21.89.0/24 IP Tree for Address Space


12.21.90.0 Single IP Address
12.21.90.0/24 IP Tree for Address Space


12.21.91.0 Single IP Address
12.21.91.0/24 IP Tree for Address Space


12.21.92.0 Single IP Address
12.21.92.0/24 IP Tree for Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.
12.21.92.0/24 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.93.0 Single IP Address
12.21.93.0/24 IP Tree for Address Space - Trek Bicycle Corporation AS26345 • All networks of Trek Bicycle Corporation
12.21.93.0/24 Private Address Space - Trek Bicycle Corporation AS26345 • All networks of Trek Bicycle Corporation


12.21.94.0 Single IP Address
12.21.94.0/24 IP Tree for Address Space
12.21.94.0/23 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.95.0 Single IP Address
12.21.95.0/24 IP Tree for Address Space


12.21.96.0 Single IP Address
12.21.96.0/24 IP Tree for Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.
12.21.96.0/24 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.97.0 Single IP Address
12.21.97.0/24 IP Tree for Address Space - PARIS ACCESSORIES INC. AS14879 • All networks of PARIS ACCESSORIES INC.
12.21.97.0/24 Private Address Space - PARIS ACCESSORIES INC. AS14879 • All networks of PARIS ACCESSORIES INC.


12.21.98.0 Single IP Address
12.21.98.0/24 IP Tree for Address Space
12.21.98.0/23 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.99.0 Single IP Address
12.21.99.0/24 IP Tree for Address Space


12.21.100.0 Single IP Address
12.21.100.0/24 IP Tree for Address Space
12.21.100.0/22 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.101.0 Single IP Address
12.21.101.0/24 IP Tree for Address Space


12.21.102.0 Single IP Address
12.21.102.0/24 IP Tree for Address Space


12.21.103.0 Single IP Address
12.21.103.0/24 IP Tree for Address Space


12.21.104.0 Single IP Address
12.21.104.0/24 IP Tree for Address Space
12.21.104.0/21 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.105.0 Single IP Address
12.21.105.0/24 IP Tree for Address Space


12.21.106.0 Single IP Address
12.21.106.0/24 IP Tree for Address Space


12.21.107.0 Single IP Address
12.21.107.0/24 IP Tree for Address Space


12.21.108.0 Single IP Address
12.21.108.0/24 IP Tree for Address Space


12.21.109.0 Single IP Address
12.21.109.0/24 IP Tree for Address Space


12.21.110.0 Single IP Address
12.21.110.0/24 IP Tree for Address Space


12.21.111.0 Single IP Address
12.21.111.0/24 IP Tree for Address Space


12.21.112.0 Single IP Address
12.21.112.0/24 IP Tree for Address Space
12.21.112.0/20 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.113.0 Single IP Address
12.21.113.0/24 IP Tree for Address Space


12.21.114.0 Single IP Address
12.21.114.0/24 IP Tree for Address Space


12.21.115.0 Single IP Address
12.21.115.0/24 IP Tree for Address Space


12.21.116.0 Single IP Address
12.21.116.0/24 IP Tree for Address Space


12.21.117.0 Single IP Address
12.21.117.0/24 IP Tree for Address Space


12.21.118.0 Single IP Address
12.21.118.0/24 IP Tree for Address Space


12.21.119.0 Single IP Address
12.21.119.0/24 IP Tree for Address Space


12.21.120.0 Single IP Address
12.21.120.0/24 IP Tree for Address Space


12.21.121.0 Single IP Address
12.21.121.0/24 IP Tree for Address Space


12.21.122.0 Single IP Address
12.21.122.0/24 IP Tree for Address Space


12.21.123.0 Single IP Address
12.21.123.0/24 IP Tree for Address Space


12.21.124.0 Single IP Address
12.21.124.0/24 IP Tree for Address Space


12.21.125.0 Single IP Address
12.21.125.0/24 IP Tree for Address Space


12.21.126.0 Single IP Address
12.21.126.0/24 IP Tree for Address Space


12.21.127.0 Single IP Address
12.21.127.0/24 IP Tree for Address Space


12.21.128.0 Single IP Address
12.21.128.0/24 IP Tree for Address Space
12.21.128.0/21 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.129.0 Single IP Address
12.21.129.0/24 IP Tree for Address Space


12.21.130.0 Single IP Address
12.21.130.0/24 IP Tree for Address Space


12.21.131.0 Single IP Address
12.21.131.0/24 IP Tree for Address Space


12.21.132.0 Single IP Address
12.21.132.0/24 IP Tree for Address Space


12.21.133.0 Single IP Address
12.21.133.0/24 IP Tree for Address Space


12.21.134.0 Single IP Address
12.21.134.0/24 IP Tree for Address Space


12.21.135.0 Single IP Address
12.21.135.0/24 IP Tree for Address Space


12.21.136.0 Single IP Address
12.21.136.0/24 IP Tree for Address Space
12.21.136.0/22 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.137.0 Single IP Address
12.21.137.0/24 IP Tree for Address Space


12.21.138.0 Single IP Address
12.21.138.0/24 IP Tree for Address Space


12.21.139.0 Single IP Address
12.21.139.0/24 IP Tree for Address Space


12.21.140.0 Single IP Address
12.21.140.0/24 IP Tree for Address Space
12.21.140.0/23 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.141.0 Single IP Address
12.21.141.0/24 IP Tree for Address Space


12.21.142.0 Single IP Address
12.21.142.0/24 IP Tree for Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.
12.21.142.0/24 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.143.0 Single IP Address
12.21.143.0/24 IP Tree for Address Space - Byers Engineering Company AS53325 • All networks of Byers Engineering Company
12.21.143.0/24 Private Address Space - Byers Engineering Company AS53325 • All networks of Byers Engineering Company


12.21.144.0 Single IP Address
12.21.144.0/24 IP Tree for Address Space
12.21.144.0/21 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.145.0 Single IP Address
12.21.145.0/24 IP Tree for Address Space


12.21.146.0 Single IP Address
12.21.146.0/24 IP Tree for Address Space


12.21.147.0 Single IP Address
12.21.147.0/24 IP Tree for Address Space


12.21.148.0 Single IP Address
12.21.148.0/24 IP Tree for Address Space


12.21.149.0 Single IP Address
12.21.149.0/24 IP Tree for Address Space


12.21.150.0 Single IP Address
12.21.150.0/24 IP Tree for Address Space


12.21.151.0 Single IP Address
12.21.151.0/24 IP Tree for Address Space


12.21.152.0 Single IP Address
12.21.152.0/24 IP Tree for Address Space
12.21.152.0/23 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.153.0 Single IP Address
12.21.153.0/24 IP Tree for Address Space


12.21.154.0 Single IP Address
12.21.154.0/24 IP Tree for Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.
12.21.154.0/24 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.155.0 Single IP Address
12.21.155.0/24 IP Tree for Address Space - Uniti Fiber Holdings Inc. AS13760 • All networks of Uniti Fiber Holdings Inc.
12.21.155.0/24 Private Address Space - Uniti Fiber Holdings Inc. AS13760 • All networks of Uniti Fiber Holdings Inc.


12.21.156.0 Single IP Address
12.21.156.0/24 IP Tree for Address Space
12.21.156.0/22 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.157.0 Single IP Address
12.21.157.0/24 IP Tree for Address Space


12.21.158.0 Single IP Address
12.21.158.0/24 IP Tree for Address Space


12.21.159.0 Single IP Address
12.21.159.0/24 IP Tree for Address Space


12.21.160.0 Single IP Address
12.21.160.0/24 IP Tree for Address Space
12.21.160.0/19 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.161.0 Single IP Address
12.21.161.0/24 IP Tree for Address Space


12.21.162.0 Single IP Address
12.21.162.0/24 IP Tree for Address Space


12.21.163.0 Single IP Address
12.21.163.0/24 IP Tree for Address Space


12.21.164.0 Single IP Address
12.21.164.0/24 IP Tree for Address Space


12.21.165.0 Single IP Address
12.21.165.0/24 IP Tree for Address Space


12.21.166.0 Single IP Address
12.21.166.0/24 IP Tree for Address Space


12.21.167.0 Single IP Address
12.21.167.0/24 IP Tree for Address Space


12.21.168.0 Single IP Address
12.21.168.0/24 IP Tree for Address Space


12.21.169.0 Single IP Address
12.21.169.0/24 IP Tree for Address Space


12.21.170.0 Single IP Address
12.21.170.0/24 IP Tree for Address Space


12.21.171.0 Single IP Address
12.21.171.0/24 IP Tree for Address Space


12.21.172.0 Single IP Address
12.21.172.0/24 IP Tree for Address Space


12.21.173.0 Single IP Address
12.21.173.0/24 IP Tree for Address Space


12.21.174.0 Single IP Address
12.21.174.0/24 IP Tree for Address Space


12.21.175.0 Single IP Address
12.21.175.0/24 IP Tree for Address Space


12.21.176.0 Single IP Address
12.21.176.0/24 IP Tree for Address Space


12.21.177.0 Single IP Address
12.21.177.0/24 IP Tree for Address Space


12.21.178.0 Single IP Address
12.21.178.0/24 IP Tree for Address Space


12.21.179.0 Single IP Address
12.21.179.0/24 IP Tree for Address Space


12.21.180.0 Single IP Address
12.21.180.0/24 IP Tree for Address Space


12.21.181.0 Single IP Address
12.21.181.0/24 IP Tree for Address Space


12.21.182.0 Single IP Address
12.21.182.0/24 IP Tree for Address Space


12.21.183.0 Single IP Address
12.21.183.0/24 IP Tree for Address Space


12.21.184.0 Single IP Address
12.21.184.0/24 IP Tree for Address Space


12.21.185.0 Single IP Address
12.21.185.0/24 IP Tree for Address Space


12.21.186.0 Single IP Address
12.21.186.0/24 IP Tree for Address Space


12.21.187.0 Single IP Address
12.21.187.0/24 IP Tree for Address Space


12.21.188.0 Single IP Address
12.21.188.0/24 IP Tree for Address Space


12.21.189.0 Single IP Address
12.21.189.0/24 IP Tree for Address Space


12.21.190.0 Single IP Address
12.21.190.0/24 IP Tree for Address Space


12.21.191.0 Single IP Address
12.21.191.0/24 IP Tree for Address Space


12.21.192.0 Single IP Address
12.21.192.0/24 IP Tree for Address Space
12.21.192.0/23 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.193.0 Single IP Address
12.21.193.0/24 IP Tree for Address Space


12.21.194.0 Single IP Address
12.21.194.0/24 IP Tree for Address Space - Mikrotec Internet Services AS3801 • All networks of Mikrotec Internet Services
12.21.194.0/24 Private Address Space - Mikrotec Internet Services AS3801 • All networks of Mikrotec Internet Services


12.21.195.0 Single IP Address
12.21.195.0/24 IP Tree for Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.
12.21.195.0/24 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.196.0 Single IP Address
12.21.196.0/24 IP Tree for Address Space
12.21.196.0/22 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.197.0 Single IP Address
12.21.197.0/24 IP Tree for Address Space


12.21.198.0 Single IP Address
12.21.198.0/24 IP Tree for Address Space


12.21.199.0 Single IP Address
12.21.199.0/24 IP Tree for Address Space


12.21.200.0 Single IP Address
12.21.200.0/24 IP Tree for Address Space
12.21.200.0/22 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.201.0 Single IP Address
12.21.201.0/24 IP Tree for Address Space


12.21.202.0 Single IP Address
12.21.202.0/24 IP Tree for Address Space


12.21.203.0 Single IP Address
12.21.203.0/24 IP Tree for Address Space


12.21.204.0 Single IP Address
12.21.204.0/24 IP Tree for Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.
12.21.204.0/24 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.205.0 Single IP Address
12.21.205.0/24 IP Tree for Address Space - Mobile Communications LLC AS398229 • All networks of Mobile Communications LLC
12.21.205.0/24 Private Address Space - Mobile Communications LLC AS398229 • All networks of Mobile Communications LLC


12.21.206.0 Single IP Address
12.21.206.0/24 IP Tree for Address Space - Mobile Communications LLC AS398229 • All networks of Mobile Communications LLC
12.21.206.0/24 Private Address Space - Mobile Communications LLC AS398229 • All networks of Mobile Communications LLC


12.21.207.0 Single IP Address
12.21.207.0/24 IP Tree for Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.
12.21.207.0/24 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.208.0 Single IP Address
12.21.208.0/24 IP Tree for Address Space
12.21.208.0/20 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.209.0 Single IP Address
12.21.209.0/24 IP Tree for Address Space


12.21.210.0 Single IP Address
12.21.210.0/24 IP Tree for Address Space


12.21.211.0 Single IP Address
12.21.211.0/24 IP Tree for Address Space


12.21.212.0 Single IP Address
12.21.212.0/24 IP Tree for Address Space


12.21.213.0 Single IP Address
12.21.213.0/24 IP Tree for Address Space


12.21.214.0 Single IP Address
12.21.214.0/24 IP Tree for Address Space


12.21.215.0 Single IP Address
12.21.215.0/24 IP Tree for Address Space


12.21.216.0 Single IP Address
12.21.216.0/24 IP Tree for Address Space


12.21.217.0 Single IP Address
12.21.217.0/24 IP Tree for Address Space


12.21.218.0 Single IP Address
12.21.218.0/24 IP Tree for Address Space


12.21.219.0 Single IP Address
12.21.219.0/24 IP Tree for Address Space


12.21.220.0 Single IP Address
12.21.220.0/24 IP Tree for Address Space


12.21.221.0 Single IP Address
12.21.221.0/24 IP Tree for Address Space


12.21.222.0 Single IP Address
12.21.222.0/24 IP Tree for Address Space


12.21.223.0 Single IP Address
12.21.223.0/24 IP Tree for Address Space


12.21.224.0 Single IP Address
12.21.224.0/24 IP Tree for Address Space
12.21.224.0/22 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.225.0 Single IP Address
12.21.225.0/24 IP Tree for Address Space


12.21.226.0 Single IP Address
12.21.226.0/24 IP Tree for Address Space


12.21.227.0 Single IP Address
12.21.227.0/24 IP Tree for Address Space


12.21.228.0 Single IP Address
12.21.228.0/24 IP Tree for Address Space - Global Linking Solutions AS30525 • All networks of Global Linking Solutions
12.21.228.0/24 Private Address Space - Global Linking Solutions AS30525 • All networks of Global Linking Solutions


12.21.229.0 Single IP Address
12.21.229.0/24 IP Tree for Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.
12.21.229.0/24 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.230.0 Single IP Address
12.21.230.0/24 IP Tree for Address Space
12.21.230.0/23 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.231.0 Single IP Address
12.21.231.0/24 IP Tree for Address Space


12.21.232.0 Single IP Address
12.21.232.0/24 IP Tree for Address Space
12.21.232.0/21 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.233.0 Single IP Address
12.21.233.0/24 IP Tree for Address Space


12.21.234.0 Single IP Address
12.21.234.0/24 IP Tree for Address Space


12.21.235.0 Single IP Address
12.21.235.0/24 IP Tree for Address Space


12.21.236.0 Single IP Address
12.21.236.0/24 IP Tree for Address Space


12.21.237.0 Single IP Address
12.21.237.0/24 IP Tree for Address Space


12.21.238.0 Single IP Address
12.21.238.0/24 IP Tree for Address Space


12.21.239.0 Single IP Address
12.21.239.0/24 IP Tree for Address Space


12.21.240.0 Single IP Address
12.21.240.0/24 IP Tree for Address Space
12.21.240.0/20 Private Address Space - AT&T Services Inc. AS7018 • All networks of AT&T Services Inc.


12.21.241.0 Single IP Address
12.21.241.0/24 IP Tree for Address Space


12.21.242.0 Single IP Address
12.21.242.0/24 IP Tree for Address Space


12.21.243.0 Single IP Address
12.21.243.0/24 IP Tree for Address Space


12.21.244.0 Single IP Address
12.21.244.0/24 IP Tree for Address Space


12.21.245.0 Single IP Address
12.21.245.0/24 IP Tree for Address Space


12.21.246.0 Single IP Address
12.21.246.0/24 IP Tree for Address Space


12.21.247.0 Single IP Address
12.21.247.0/24 IP Tree for Address Space


12.21.248.0 Single IP Address
12.21.248.0/24 IP Tree for Address Space


12.21.249.0 Single IP Address
12.21.249.0/24 IP Tree for Address Space


12.21.250.0 Single IP Address
12.21.250.0/24 IP Tree for Address Space


12.21.251.0 Single IP Address
12.21.251.0/24 IP Tree for Address Space


12.21.252.0 Single IP Address
12.21.252.0/24 IP Tree for Address Space


12.21.253.0 Single IP Address
12.21.253.0/24 IP Tree for Address Space


12.21.254.0 Single IP Address
12.21.254.0/24 IP Tree for Address Space


12.21.255.0 Single IP Address
12.21.255.0/24 IP Tree for Address Space