go
img.youtube.com has one IP number , via cname to ytimg.l.google.com , but the reverse is yo-in-f118.1e100.net. 1.open.gmodules.com, yo-in-f118.1e100.net, r12juj27q3o.friendconnect.gmodules.com and r1rk9np76pcsfoeeklohkdzjuj27q30.friendconnect.gmodules.com point to the same IP. youtube.com is a domain controlled by four nameservers at google.com. All of them are on different IP networks. Incoming mail for youtube.com is handled by one mailserver at sjl.youtube.com. youtube.com has three IP numbers. All of them are on different IP networks. img.youtube.com is hosted on a server in United States.

img.youtube.com
cname records
ytimg.l.google.com
+ 64.233.169.118 64.233.168.0/23 AS15169 yo-in-f118.1e100.net
+ --- yo-in-f118.1e100.net

youtube.com
a records
 
+ 74.125.45.100 74.125.44.0/23 AS15169  
+ ---  
+ 74.125.67.100 74.125.66.0/23 AS15169  
+ 74.125.127.100 74.125.126.0/23 AS15169  
ns-soa records
 
+   AS?  
+ ---  
ns records
ns1.google.com
+ 216.239.32.10 216.239.32.0/24 AS15169 -
+ --- -
ns2.google.com
+ 216.239.34.10 216.239.34.0/24 AS15169 -
ns3.google.com
+ 216.239.36.10 216.239.36.0/24 AS15169 -
ns4.google.com
+ 216.239.38.10 216.239.38.0/24 AS15169 -
mx records
sjl-mbox1.sjl.youtube.com
+ 208.65.153.154 208.65.152.0/22 AS36561 -
+ --- -
ip numbers of host
64.233.169.118
ptrs of ip numbers
yo-in-f118.1e100.net
hostnames sharing ip with a-records
*.friendconnect.gmodules.com
*.open.gmodules.com
1.open.gmodules.com
r12juj27q3o.friendconnect.gmodules.com
r1rk9np76pcsfoeeklohkdzjuj27q30.friendconnect.gmodules.com
yo-in-f118.1e100.net
cname
ytimg.l.google.com