What's the IP address range of Facebook's Open Graph crawler?

Question

In order to test the Open Graph API on our preview environment, we need to poke a hole in our firewall to allow Facebook to scrape our object pages. What IP ranges should we

Answer 1

• 66.220.144.0/20

• 66.220.144.0/21

• 66.220.152.0/21
• 66.220.159.0/24

• 69.63.176.0/20

• 69.63.176.0/21

• 69.63.176.0/24

• 69.63.184.0/21

• 69.171.224.0/19

• 69.171.224.0/20
• 69.171.239.0/24
• 69.171.240.0/20
• 69.171.255.0/24
• 74.119.76.0/22
• 103.4.96.0/22
• 173.252.64.0/18
• 173.252.64.0/19
• 173.252.70.0/24
• 173.252.96.0/19

• 204.15.20.0/22

• 31.13.24.0/21

• 31.13.64.0/18
• 31.13.64.0/19
• 31.13.64.0/24
• 31.13.65.0/24
• 31.13.66.0/24
• 31.13.67.0/24
• 31.13.68.0/24
• 31.13.69.0/24
• 31.13.70.0/24
• 31.13.71.0/24
• 31.13.72.0/24
• 31.13.73.0/24
• 31.13.74.0/24
• 31.13.75.0/24
• 31.13.76.0/24
• 31.13.77.0/24
• 31.13.96.0/19