go
ns2.facebook.com has one IP number. facebook.com, rookbrewing.com and facebookinfo.com use this as a nameserver. facebook.com is a domain controlled by four nameservers. Two of them are on the same IP network. Incoming mail for facebook.com is handled by two mailservers on the same IP network. facebook.com has five IP numbers. Some of them are on the same IP network. ns2.facebook.com is hosted on a server in United States.

ns2.facebook.com
a records
 
+ 204.74.67.132 204.74.67.0/24 AS12008  
+ ---  

facebook.com
a records
 
+ 69.63.181.11 69.63.176.0/21 AS32934  
+ ---  
+ 69.63.181.12 69.63.176.0/21 AS32934  
+ 69.63.184.142 69.63.184.0/21 AS32934  
+ 69.63.187.17 69.63.184.0/21 AS32934  
+ 69.63.187.19 69.63.184.0/21 AS32934  
ns-soa records
 
+   AS?  
+ ---  
ns records
ns1.facebook.com
+ 204.74.66.132 204.74.66.0/24 AS12008  
+ ---  
ns2.facebook.com
+ 204.74.67.132 204.74.67.0/24 AS12008  
dns04.sf2p.tfbnw.net
+ 69.63.176.8 69.63.176.0/21 AS32934 -
+ --- -
dns05.sf2p.tfbnw.net
+ 69.63.176.9 69.63.176.0/21 AS32934 -
mx records
mx.snc1.tfbnw.net
+ 69.63.179.26 69.63.176.0/21 AS32934 -
+ --- -
mx.sf2p.tfbnw.net
+ 69.63.176.71 69.63.176.0/21 AS32934 -
ip numbers of host
204.74.67.132
domains using this as nameserver
facebook.com
facebookinfo.com
rookbrewing.com
used as nameserver but missing in zone
facebookinfo.com
rookbrewery.net
rookbrewing.com