IP Address Allocation » ISPs » AT&T Internet

We have found a total of 3,012 IP address ranges that are allocated for the AT&T Internet Internet Service Provider. Currently you are viewing page 9 of a total of 61 pages showing you the allocation for IP addresses ranging between 65.71.140.0 and 66.123.51.255 here on IPAddress.com.

IP Address RangeNumber of IP AddressesCIDR SubnetsSample IP
65.71.140.0-65.71.147.2552,048
  • 65.71.140.0/22
  • 65.71.144.0/22
65.71.147.125
65.71.152.0-65.71.171.2555,120
  • 65.71.152.0/21
  • 65.71.160.0/21
  • 65.71.168.0/22
65.71.165.124
65.71.176.0-65.71.211.2559,216
  • 65.71.176.0/20
  • 65.71.192.0/20
  • 65.71.208.0/22
65.71.184.99
65.71.216.0-65.71.239.2556,144
  • 65.71.216.0/21
  • 65.71.224.0/20
65.71.229.47
65.71.244.0-65.71.251.2552,048
  • 65.71.244.0/22
  • 65.71.248.0/22
65.71.244.55
65.75.200.0-65.75.203.2551,024
  • 65.75.200.0/22
65.75.203.21
65.80.0.0-65.83.255.255262,144
  • 65.80.0.0/14
65.81.157.9
65.87.8.0-65.87.8.255256
  • 65.87.8.0/24
65.87.8.243
65.97.64.0-65.97.127.25516,384
  • 65.97.64.0/18
65.97.83.230
65.181.160.0-65.181.175.2554,096
  • 65.181.160.0/20
65.181.174.66
66.9.96.0-66.9.111.2554,096
  • 66.9.96.0/20
66.9.106.181
66.10.0.0-66.10.255.25565,536
  • 66.10.0.0/16
66.10.109.21
66.20.0.0-66.21.92.25589,344
  • 66.20.0.0/16
  • 66.21.0.0/18
  • 66.21.64.0/20
  • 66.21.80.0/21
  • 66.21.88.0/22
  • 66.21.92.0/24
66.20.166.119
66.21.94.0-66.21.94.255256
  • 66.21.94.0/24
66.21.94.96
66.21.96.0-66.21.111.2554,096
  • 66.21.96.0/20
66.21.103.125
66.21.114.0-66.21.121.471,840
  • 66.21.114.0/23
  • 66.21.116.0/22
  • 66.21.120.0/24
  • 66.21.121.0/27
  • 66.21.121.32/28
66.21.115.190
66.21.121.64-66.21.121.9532
  • 66.21.121.64/27
66.21.121.68
66.21.121.128-66.21.121.15932
  • 66.21.121.128/27
66.21.121.134
66.21.121.192-66.21.121.25564
  • 66.21.121.192/26
66.21.121.234
66.21.123.128-66.21.239.25529,824
  • 66.21.123.128/25
  • 66.21.124.0/22
  • 66.21.128.0/18
  • 66.21.192.0/19
  • 66.21.224.0/20
66.21.203.78
66.21.240.64-66.21.241.255448
  • 66.21.240.64/26
  • 66.21.240.128/25
  • 66.21.241.0/24
66.21.241.39
66.21.242.128-66.21.243.63192
  • 66.21.242.128/25
  • 66.21.243.0/26
66.21.242.245
66.21.243.128-66.21.255.2553,200
  • 66.21.243.128/25
  • 66.21.244.0/22
  • 66.21.248.0/21
66.21.243.163
66.43.4.0-66.43.7.2551,024
  • 66.43.4.0/22
66.43.5.248
66.72.0.0-66.72.63.25516,384
  • 66.72.0.0/18
66.72.9.226
66.72.68.0-66.72.107.25510,240
  • 66.72.68.0/22
  • 66.72.72.0/21
  • 66.72.80.0/20
  • 66.72.96.0/21
  • 66.72.104.0/22
66.72.68.76
66.72.112.0-66.72.223.25528,672
  • 66.72.112.0/20
  • 66.72.128.0/18
  • 66.72.192.0/19
66.72.208.234
66.72.228.0-66.73.127.25539,936
  • 66.72.228.0/22
  • 66.72.232.0/21
  • 66.72.240.0/20
  • 66.73.0.0/17
66.73.100.240
66.73.132.0-66.73.235.25526,624
  • 66.73.132.0/22
  • 66.73.136.0/21
  • 66.73.144.0/20
  • 66.73.160.0/19
  • 66.73.192.0/19
  • 66.73.224.0/21
  • 66.73.232.0/22
66.73.167.176
66.73.240.0-66.73.255.2554,096
  • 66.73.240.0/20
66.73.241.13
66.97.144.0-66.97.147.2551,024
  • 66.97.144.0/22
66.97.147.117
66.118.4.0-66.118.7.2551,024
  • 66.118.4.0/22
66.118.5.193
66.120.0.0-66.120.55.25514,336
  • 66.120.0.0/19
  • 66.120.32.0/20
  • 66.120.48.0/21
66.120.37.45
66.120.56.1-66.120.115.25515,359
  • 66.120.56.1/32
  • 66.120.56.2/31
  • 66.120.56.4/30
  • 66.120.56.8/29
  • 66.120.56.16/28
  • 66.120.56.32/27
  • 66.120.56.64/26
  • 66.120.56.128/25
  • 66.120.57.0/24
  • 66.120.58.0/23
  • 66.120.60.0/22
  • 66.120.64.0/19
  • 66.120.96.0/20
  • 66.120.112.0/22
66.120.58.3
66.120.116.1-66.120.131.2554,095
  • 66.120.116.1/32
  • 66.120.116.2/31
  • 66.120.116.4/30
  • 66.120.116.8/29
  • 66.120.116.16/28
  • 66.120.116.32/27
  • 66.120.116.64/26
  • 66.120.116.128/25
  • 66.120.117.0/24
  • 66.120.118.0/23
  • 66.120.120.0/21
  • 66.120.128.0/22
66.120.119.154
66.120.132.1-66.120.155.2556,143
  • 66.120.132.1/32
  • 66.120.132.2/31
  • 66.120.132.4/30
  • 66.120.132.8/29
  • 66.120.132.16/28
  • 66.120.132.32/27
  • 66.120.132.64/26
  • 66.120.132.128/25
  • 66.120.133.0/24
  • 66.120.134.0/23
  • 66.120.136.0/21
  • 66.120.144.0/21
  • 66.120.152.0/22
66.120.151.236
66.120.156.1-66.120.159.2551,023
  • 66.120.156.1/32
  • 66.120.156.2/31
  • 66.120.156.4/30
  • 66.120.156.8/29
  • 66.120.156.16/28
  • 66.120.156.32/27
  • 66.120.156.64/26
  • 66.120.156.128/25
  • 66.120.157.0/24
  • 66.120.158.0/23
66.120.156.243
66.120.160.1-66.120.243.25521,503
  • 66.120.160.1/32
  • 66.120.160.2/31
  • 66.120.160.4/30
  • 66.120.160.8/29
  • 66.120.160.16/28
  • 66.120.160.32/27
  • 66.120.160.64/26
  • 66.120.160.128/25
  • 66.120.161.0/24
  • 66.120.162.0/23
  • 66.120.164.0/22
  • 66.120.168.0/21
  • 66.120.176.0/20
  • 66.120.192.0/19
  • 66.120.224.0/20
  • 66.120.240.0/22
66.120.167.88
66.120.244.1-66.121.55.25517,407
  • 66.120.244.1/32
  • 66.120.244.2/31
  • 66.120.244.4/30
  • 66.120.244.8/29
  • 66.120.244.16/28
  • 66.120.244.32/27
  • 66.120.244.64/26
  • 66.120.244.128/25
  • 66.120.245.0/24
  • 66.120.246.0/23
  • 66.120.248.0/21
  • 66.121.0.0/19
  • 66.121.32.0/20
  • 66.121.48.0/21
66.121.36.134
66.121.56.1-66.121.67.2553,071
  • 66.121.56.1/32
  • 66.121.56.2/31
  • 66.121.56.4/30
  • 66.121.56.8/29
  • 66.121.56.16/28
  • 66.121.56.32/27
  • 66.121.56.64/26
  • 66.121.56.128/25
  • 66.121.57.0/24
  • 66.121.58.0/23
  • 66.121.60.0/22
  • 66.121.64.0/22
66.121.67.212
66.121.68.1-66.121.123.25514,335
  • 66.121.68.1/32
  • 66.121.68.2/31
  • 66.121.68.4/30
  • 66.121.68.8/29
  • 66.121.68.16/28
  • 66.121.68.32/27
  • 66.121.68.64/26
  • 66.121.68.128/25
  • 66.121.69.0/24
  • 66.121.70.0/23
  • 66.121.72.0/21
  • 66.121.80.0/20
  • 66.121.96.0/20
  • 66.121.112.0/21
  • 66.121.120.0/22
66.121.69.183
66.121.124.1-66.121.239.25529,695
  • 66.121.124.1/32
  • 66.121.124.2/31
  • 66.121.124.4/30
  • 66.121.124.8/29
  • 66.121.124.16/28
  • 66.121.124.32/27
  • 66.121.124.64/26
  • 66.121.124.128/25
  • 66.121.125.0/24
  • 66.121.126.0/23
  • 66.121.128.0/18
  • 66.121.192.0/19
  • 66.121.224.0/20
66.121.187.52
66.121.240.1-66.121.247.2552,047
  • 66.121.240.1/32
  • 66.121.240.2/31
  • 66.121.240.4/30
  • 66.121.240.8/29
  • 66.121.240.16/28
  • 66.121.240.32/27
  • 66.121.240.64/26
  • 66.121.240.128/25
  • 66.121.241.0/24
  • 66.121.242.0/23
  • 66.121.244.0/22
66.121.242.141
66.121.248.1-66.122.59.25517,407
  • 66.121.248.1/32
  • 66.121.248.2/31
  • 66.121.248.4/30
  • 66.121.248.8/29
  • 66.121.248.16/28
  • 66.121.248.32/27
  • 66.121.248.64/26
  • 66.121.248.128/25
  • 66.121.249.0/24
  • 66.121.250.0/23
  • 66.121.252.0/22
  • 66.122.0.0/19
  • 66.122.32.0/20
  • 66.122.48.0/21
  • 66.122.56.0/22
66.121.253.45
66.122.60.1-66.122.71.2553,071
  • 66.122.60.1/32
  • 66.122.60.2/31
  • 66.122.60.4/30
  • 66.122.60.8/29
  • 66.122.60.16/28
  • 66.122.60.32/27
  • 66.122.60.64/26
  • 66.122.60.128/25
  • 66.122.61.0/24
  • 66.122.62.0/23
  • 66.122.64.0/21
66.122.68.77
66.122.72.1-66.122.131.25515,359
  • 66.122.72.1/32
  • 66.122.72.2/31
  • 66.122.72.4/30
  • 66.122.72.8/29
  • 66.122.72.16/28
  • 66.122.72.32/27
  • 66.122.72.64/26
  • 66.122.72.128/25
  • 66.122.73.0/24
  • 66.122.74.0/23
  • 66.122.76.0/22
  • 66.122.80.0/20
  • 66.122.96.0/19
  • 66.122.128.0/22
66.122.130.22
66.122.132.1-66.122.211.25520,479
  • 66.122.132.1/32
  • 66.122.132.2/31
  • 66.122.132.4/30
  • 66.122.132.8/29
  • 66.122.132.16/28
  • 66.122.132.32/27
  • 66.122.132.64/26
  • 66.122.132.128/25
  • 66.122.133.0/24
  • 66.122.134.0/23
  • 66.122.136.0/21
  • 66.122.144.0/20
  • 66.122.160.0/19
  • 66.122.192.0/20
  • 66.122.208.0/22
66.122.186.208
66.122.212.1-66.123.7.25513,311
  • 66.122.212.1/32
  • 66.122.212.2/31
  • 66.122.212.4/30
  • 66.122.212.8/29
  • 66.122.212.16/28
  • 66.122.212.32/27
  • 66.122.212.64/26
  • 66.122.212.128/25
  • 66.122.213.0/24
  • 66.122.214.0/23
  • 66.122.216.0/21
  • 66.122.224.0/19
  • 66.123.0.0/21
66.123.6.45
66.123.8.1-66.123.31.2556,143
  • 66.123.8.1/32
  • 66.123.8.2/31
  • 66.123.8.4/30
  • 66.123.8.8/29
  • 66.123.8.16/28
  • 66.123.8.32/27
  • 66.123.8.64/26
  • 66.123.8.128/25
  • 66.123.9.0/24
  • 66.123.10.0/23
  • 66.123.12.0/22
  • 66.123.16.0/20
66.123.11.83
66.123.32.1-66.123.51.2555,119
  • 66.123.32.1/32
  • 66.123.32.2/31
  • 66.123.32.4/30
  • 66.123.32.8/29
  • 66.123.32.16/28
  • 66.123.32.32/27
  • 66.123.32.64/26
  • 66.123.32.128/25
  • 66.123.33.0/24
  • 66.123.34.0/23
  • 66.123.36.0/22
  • 66.123.40.0/21
  • 66.123.48.0/22
66.123.37.14