Users and network administrators have reported issues when trying to filter or block access to Facebook with SOHO firewall hardware, such as the TRENDnet TW100-BRF214 Firewall Router. Entering the address "facebook.com" seems to fail at blocking facebook.com consistently.
Under the typical SOHO firewall, going to "URL Filter" and entering "facebook.com" and "www.facebook.com" will only result in partial blocking of the site. In fact, users enter www.facebook.com in the URL of the web browser and are still able to access the site.
It is necessary to block all associated IP addresses and domain combinations related to facebook. Maintaining a comprehensive up to date list may not be practical. Here we hope to include as much as possible as current as time permits.
facebook known address
URL List
facebook.com www.facebook.com login.facebook.com blog.facebook.com apps.facebook.com facebook.com en-gb.facebook.com
IPv4 List
204.15.20.0 - 204.15.23.255 69.63.176.0 - 69.63.191.255 69.171.224.0 - 69.171.255.255 66.220.144.0 - 66.220.159.255
research
- Due to "Round Robin DNS" the facebook.com domain does resolve to multiple IP addresses
- Facebook may be migrated from one set of IP addresses to other sets at any given time
Doing a simple "host facebook.com" produces the following:
facebook.com has address 66.220.149.88 facebook.com has address 66.220.152.16 facebook.com has address 69.171.234.21 facebook.com has address 69.171.237.16 facebook.com has address 69.171.247.21
whole doing a "host www.facebook.com" results in:
www.facebook.com has address 69.171.237.32
A source reports, "the main facebook website has the following IP addresses"
www.facebook.com A INET 69.63.176.12 www.facebook.com A INET 69.63.176.13 www.facebook.com A INET 69.63.176.14 www.facebook.com A INET 204.15.20.25 www.facebook.com A INET 204.15.20.26 www.facebook.com A INET 69.63.176.11
the following IP address ranges that appear to be associated with facebook:
69.63.176.1 - 69.63.191.255 204.15.20.1 - 204.15.23.255