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

New information is listed on the following URL & yes, they do have this info public.

• https://developers.facebook.com/docs/sharing/webmasters

Run this command to get a current list of IP addresses the crawler uses.

whois -h whois.radb.net -- '-i origin AS32934' | grep ^route

Such as

# For example only - over 100 in total
31.13.24.0/21 
66.220.144.0/20    
2401:db00::/32  
2620:0:1c00::/40  
2a03:2880::/32 

So yeah, the ones mentioned by DMCS, stand correct. Just wanted to verify & found this info.

Thanks