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

Facebook does not publish their crawler source address range officially, but you can look at the list of all their IP ranges in the publicly available BGP routing table:

• http://www.robtex.com/as/as32934.html#bgp

We're currently using this list:

• 69.171.224.0/19
• 74.119.76.0/22
• 204.15.20.0/22
• 66.220.144.0/20
• 69.63.176.0/20
• 173.252.64.0/18