Below is a list of IP addresses used by Facebook.

TFBNET3 (NET-69-171-224-0-1) 69.171.224.0 - 69.171.255.255

TFBNET4 (NET-74-119-76-0-1) 74.119.76.0 - 74.119.79.255

TFBNET1 (NET-204-15-20-0-1) 204.15.20.0 - 204.15.23.255

TFBNET3 (NET-66-220-144-0-1) 66.220.144.0 - 66.220.159.255

TFBNET2 (NET-69-63-176-0-1) 69.63.176.0 - 69.63.191.255

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