facebook.co.jp

• Delegation
• Authoritative answer
• Related hostnames

Delegation

Authoritative answer

ANSWER for facebook.co.jp.
facebook.co.jp.	3600	SOA	a.ns.facebook.com. dns.facebook.com. ( 2013051800 14400 1800 604800 3600 )
	172800	NS	b.ns.facebook.com.
	172800	NS	a.ns.facebook.com.
	900	A	173.252.110.27
ADDITIONAL for facebook.co.jp.
a.ns.facebook.com.	172800	A	69.171.239.12
b.ns.facebook.com.	172800	A	69.171.255.12

Related hostnames

Facebook.co.jp is a domain controlled by two domain name servers at facebook.com. Both are on different IP networks. Facebook.co.jp has one IP number (173.252.110.27), but the reverse is ?.

Faceobok.com, facebooks.com, facebookcom.com, facebook.es, fbops.com and at least 40 other hosts point to the same IP and also shares name servers. Httpwwwfacebook.com, hsfacebook.com, facebookhome.info, oglint.com, facebook-inc.com and at least 76 other hosts point to the same IP. Ffbymale.com, friendfeed-inc.com, tfbnet.net, opencompute.com, facebook.lv and at least 127 other hosts share name servers with this domain. Www.facebook.co.jp are hosts under this domain. Facebook.tj, facebook.lt, facebook.tv, facebook.me, facebook.uy and at least 146 other hosts are similar domain names.

Also check www.facebook.co.jp.

Facebook.co.jp is hosted on a server in Menlo Park, CA, United States even though the hostname implies Japan.

The IP number 173.252.110.27

There are about ninety host names that point to the IP number 173.252.110.27.

• All of those point only to that ip number (example: facebook.co.id, facebook.net.au and facebook.com.es ).
• Most of them use the name server b.ns.facebook.com (example: fb.me, facebook.com.ar and fbquestions.com ). Worth noting is that one quarter of the domains that use the name server b.ns.facebook.com point to the IP number 173.252.110.27.
• Most of them use the name server a.ns.facebook.com (example: fb-ops.com, facebookformobileoperators.com and facebook.com.gt ). Worth noting is that one quarter of the domains that use the name server a.ns.facebook.com point to the IP number 173.252.110.27.

The IP number 173.252.110.27 only

Most of the about ninety host names that point only to the IP number 173.252.110.27 use the two name servers a and b.ns.facebook.com together, hereafter referred to as "name server group 1", (example: oglint.net, facebook-domain-names.com and facebook.cl ). Worth noting is that a third of the domains that use name server group 1 point only to the IP number 173.252.110.27.

The name server b.ns.facebook.com

A third of the more than two hundred domains that use the name server b.ns.facebook.com point to the IP number 173.252.110.27 (example: facebook.us, facebook.co.nz and fbcdn.net ). Worth noting is that most of the host names that point to the IP number 173.252.110.27 use the name server b.ns.facebook.com.

The name server a.ns.facebook.com

There are more than two hundred domains that use the name server a.ns.facebook.com.

• Eleven percent of those use the five name servers ns3.facebook.com, ns4.facebook.com, ns5.facebook.com, a.ns.facebook.com and b.ns.facebook.com together (example: 24.13.31.in-addr.arpa, 86.13.31.in-addr.arpa and frendfeed.com ).
• Seven percent of them point to the IP number 69.171.233.18 (example: ff.im, friendfed.com and friendfeedmedia.com ).