CERFnet
IPv4 IPv6Updated: 03 July 2025
We found 31 IPv4 networks operated by this organization:
Results sorted by network size.
CIDR: 12.129.0.0/18
IP Range: 12.129.0.0 - 12.129.63.255
Block size: 16,384
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IP Range: 12.129.0.0 - 12.129.63.255
Block size: 16,384
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CIDR: 12.129.64.0/18
IP Range: 12.129.64.0 - 12.129.127.255
Block size: 16,384
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IP Range: 12.129.64.0 - 12.129.127.255
Block size: 16,384
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CIDR: 12.129.192.0/18
IP Range: 12.129.192.0 - 12.129.255.255
Block size: 16,384
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IP Range: 12.129.192.0 - 12.129.255.255
Block size: 16,384
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CIDR: 12.130.0.0/18
IP Range: 12.130.0.0 - 12.130.63.255
Block size: 16,384
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IP Range: 12.130.0.0 - 12.130.63.255
Block size: 16,384
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CIDR: 12.130.128.0/18
IP Range: 12.130.128.0 - 12.130.191.255
Block size: 16,384
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IP Range: 12.130.128.0 - 12.130.191.255
Block size: 16,384
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CIDR: 12.130.96.0/19
IP Range: 12.130.96.0 - 12.130.127.255
Block size: 8,192
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IP Range: 12.130.96.0 - 12.130.127.255
Block size: 8,192
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CIDR: 209.187.176.0/20
IP Range: 209.187.176.0 - 209.187.191.255
Block size: 4,096
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IP Range: 209.187.176.0 - 209.187.191.255
Block size: 4,096
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CIDR: 12.130.64.0/20
IP Range: 12.130.64.0 - 12.130.79.255
Block size: 4,096
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IP Range: 12.130.64.0 - 12.130.79.255
Block size: 4,096
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CIDR: 12.130.80.0/20
IP Range: 12.130.80.0 - 12.130.95.255
Block size: 4,096
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IP Range: 12.130.80.0 - 12.130.95.255
Block size: 4,096
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CIDR: 209.187.8.0/21
IP Range: 209.187.8.0 - 209.187.15.255
Block size: 2,048
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IP Range: 209.187.8.0 - 209.187.15.255
Block size: 2,048
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CIDR: 209.187.120.0/21
IP Range: 209.187.120.0 - 209.187.127.255
Block size: 2,048
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IP Range: 209.187.120.0 - 209.187.127.255
Block size: 2,048
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CIDR: 209.187.144.0/21
IP Range: 209.187.144.0 - 209.187.151.255
Block size: 2,048
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IP Range: 209.187.144.0 - 209.187.151.255
Block size: 2,048
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CIDR: 209.187.192.0/21
IP Range: 209.187.192.0 - 209.187.199.255
Block size: 2,048
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IP Range: 209.187.192.0 - 209.187.199.255
Block size: 2,048
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CIDR: 199.106.78.0/24
IP Range: 199.106.78.0 - 199.106.78.255
Block size: 256
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IP Range: 199.106.78.0 - 199.106.78.255
Block size: 256
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CIDR: 206.19.8.0/24
IP Range: 206.19.8.0 - 206.19.8.255
Block size: 256
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IP Range: 206.19.8.0 - 206.19.8.255
Block size: 256
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CIDR: 192.215.11.0/24
IP Range: 192.215.11.0 - 192.215.11.255
Block size: 256
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IP Range: 192.215.11.0 - 192.215.11.255
Block size: 256
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CIDR: 192.215.12.0/24
IP Range: 192.215.12.0 - 192.215.12.255
Block size: 256
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IP Range: 192.215.12.0 - 192.215.12.255
Block size: 256
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CIDR: 192.215.13.0/24
IP Range: 192.215.13.0 - 192.215.13.255
Block size: 256
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IP Range: 192.215.13.0 - 192.215.13.255
Block size: 256
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CIDR: 192.215.15.0/24
IP Range: 192.215.15.0 - 192.215.15.255
Block size: 256
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IP Range: 192.215.15.0 - 192.215.15.255
Block size: 256
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CIDR: 192.215.16.0/24
IP Range: 192.215.16.0 - 192.215.16.255
Block size: 256
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IP Range: 192.215.16.0 - 192.215.16.255
Block size: 256
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CIDR: 192.215.18.0/24
IP Range: 192.215.18.0 - 192.215.18.255
Block size: 256
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IP Range: 192.215.18.0 - 192.215.18.255
Block size: 256
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CIDR: 192.215.23.0/24
IP Range: 192.215.23.0 - 192.215.23.255
Block size: 256
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IP Range: 192.215.23.0 - 192.215.23.255
Block size: 256
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CIDR: 192.215.26.0/24
IP Range: 192.215.26.0 - 192.215.26.255
Block size: 256
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IP Range: 192.215.26.0 - 192.215.26.255
Block size: 256
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CIDR: 192.215.28.0/24
IP Range: 192.215.28.0 - 192.215.28.255
Block size: 256
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IP Range: 192.215.28.0 - 192.215.28.255
Block size: 256
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CIDR: 192.215.30.0/24
IP Range: 192.215.30.0 - 192.215.30.255
Block size: 256
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IP Range: 192.215.30.0 - 192.215.30.255
Block size: 256
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CIDR: 192.215.31.0/24
IP Range: 192.215.31.0 - 192.215.31.255
Block size: 256
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IP Range: 192.215.31.0 - 192.215.31.255
Block size: 256
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CIDR: 192.215.34.0/24
IP Range: 192.215.34.0 - 192.215.34.255
Block size: 256
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IP Range: 192.215.34.0 - 192.215.34.255
Block size: 256
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CIDR: 192.215.35.0/24
IP Range: 192.215.35.0 - 192.215.35.255
Block size: 256
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IP Range: 192.215.35.0 - 192.215.35.255
Block size: 256
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CIDR: 12.37.32.128/25
IP Range: 12.37.32.128 - 12.37.32.255
Block size: 128
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IP Range: 12.37.32.128 - 12.37.32.255
Block size: 128
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CIDR: 12.129.196.224/29
IP Range: 12.129.196.224 - 12.129.196.231
Block size: 8
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IP Range: 12.129.196.224 - 12.129.196.231
Block size: 8
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CIDR: 12.130.132.0/29
IP Range: 12.130.132.0 - 12.130.132.7
Block size: 8
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IP Range: 12.130.132.0 - 12.130.132.7
Block size: 8
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