mf.y7mail.com

Delegation
Authoritative answer
Related hostnames

DNS delegation of mf.y7mail.com updated: May 23, 2013 11:56:16 AM

Delegation

step	query	auth	servers
1	mf.y7mail.com.	.	(k,c,h,d,a,g,b,m,l,f,e,j,i).root-servers.net.
2	mf.y7mail.com.	com.	(k,j,a,b,d,c,h,g,i,e,l,m,f).gtld-servers.net.
3	mf.y7mail.com.	y7mail.com.	(ns4,ns3,ns2,ns1,ns5).yahoo.com.
4	rc.yahoo.com.	com.	(m,g,j,h,f,b,l,e,i,d,c,k,a).gtld-servers.net.
5	rc.yahoo.com.	yahoo.com.	(ns3,ns2,ns1,ns5,ns4).yahoo.com.
6	rc.g01.yahoodns.net.	.	(g,b,h,e,f,d,i,c,j,a,m,k,l).root-servers.net.
7	rc.g01.yahoodns.net.	net.	(e,b,h,j,l,d,f,i,m,c,g,k,a).gtld-servers.net.
8	rc.g01.yahoodns.net.	yahoodns.net.	(ns1,ns2,ns3,ns5,ns4).yahoo.com.
9	rc.g01.yahoodns.net.	g01.yahoodns.net.	(yf8,yf7,yf4,yf3,yf5,yf6,yf2,yf1).yahoo.com.
10	any-rc.a01.yahoodns.net.	yahoodns.net.	(ns3,ns2,ns1,ns5,ns4).yahoo.com.
11	any-rc.a01.yahoodns.net.	a01.yahoodns.net.	(yf1,yf2).yahoo.com.

We pick k.root-servers.net, one of the 13 root servers (1), and ask it about mf.y7mail.com and learn that com is delegated to 13 name servers (2), so we ask k.gtld-servers.net where we learn that y7mail.com is delegated to five name servers, including ns4.yahoo.com (3), so we ask that one where we see a CNAME from mf.y7mail.com to rc.yahoo.com, so we have to start all over again. We already know that m.gtld-servers.net is authoritative for com (4) and ask it about rc.yahoo.com and learn that yahoo.com is delegated to five name servers (5), so we ask ns3.yahoo.com and see a second CNAME from rc.yahoo.com to rc.g01.yahoodns.net. We start over for the third time and we pick g.root-servers.net, one of the 13 root servers (6), and ask it about rc.g01.yahoodns.net and learn that net is delegated to 13 name servers (7), so we ask e.gtld-servers.net where we learn that yahoodns.net is delegated to five name servers, including ns1.yahoo.com (8), so we ask that one and learn that g01.yahoodns.net is delegated to eight name servers (9), so we ask yf8.yahoo.com and see yet another CNAME from rc.g01.yahoodns.net to any-rc.a01.yahoodns.net. We have yet again to start all over and we already know that ns3.yahoo.com is authoritative for yahoodns.net (10) and ask it about any-rc.a01.yahoodns.net and learn that a01.yahoodns.net is delegated to two name servers (11), so we ask yf1.yahoo.com and get the following answer:

Authoritative answer

ANSWER for mf.y7mail.com.
mf.y7mail.com.	7200	CNAME	rc.yahoo.com.
ANSWER for rc.yahoo.com.
rc.yahoo.com.	300	CNAME	rc.g01.yahoodns.net.
ANSWER for rc.g01.yahoodns.net.
rc.g01.yahoodns.net.	300	CNAME	any-rc.a01.yahoodns.net.
ANSWER for any-rc.a01.yahoodns.net.
any-rc.a01.yahoodns.net.	300	A	98.139.102.145

net. com. yahoo.com. y7mail.com. yahoodns.net. rc.yahoo.com. ns2.yahoo.com. ns5.yahoo.com. yf6.yahoo.com. mf.y7mail.com. ns1.yahoo.com. ns4.yahoo.com. yf1.yahoo.com. ns3.yahoo.com. yf8.yahoo.com. yf5.yahoo.com. yf7.yahoo.com. yf3.yahoo.com. yf2.yahoo.com. yf4.yahoo.com. g01.yahoodns.net. a01.yahoodns.net. root-servers.net. gtld-servers.net. m.root-servers.net. a.root-servers.net. g.gtld-servers.net. e.gtld-servers.net. j.root-servers.net. i.gtld-servers.net. f.gtld-servers.net. m.gtld-servers.net. k.gtld-servers.net. h.root-servers.net. d.root-servers.net. d.gtld-servers.net. i.root-servers.net. h.gtld-servers.net. l.root-servers.net. k.root-servers.net. g.root-servers.net. b.gtld-servers.net. f.root-servers.net. c.gtld-servers.net. c.root-servers.net. a.gtld-servers.net. b.root-servers.net. l.gtld-servers.net. j.gtld-servers.net. e.root-servers.net. rc.g01.yahoodns.net. any-rc.a01.yahoodns.net.
whois net
whois com
whois yahoo.com
whois y7mail.com
whois yahoodns.net
whois root-servers.net
whois gtld-servers.net

whois y7mail.com, y7mail.com
domain info api y7mail.com

Mf.y7mail.com has five IP numbers (77.238.178.122, 68.180.206.184, 98.139.102.145, 106.10.165.51, 87.248.120.148). All five of them are on different IP networks.

This hostname cnames to rc.yahoo.com, sg-rc.g01.yahoodns.net, any-rc.a01.yahoodns.net and rc.g01.yahoodns.net. Httpyahoomessenger.com, gogleyahoo.com, yahhoocams.com, yahooprfiles.com, yahoopersonals.us and at least 200 other hosts point to the same IP. Mf.to, mf.fo, mf.ag, mf.fm, mf.se and at least 28 other hosts are similar domain names.

Also check www.y7mail.com and y7mail.com.

Mf.y7mail.com is hosted on five servers in Sunnyvale, CA, United States.

The two IP numbers 68.180.206.184 and 98.139.102.145 together
There are several thousand of host names that point to the two IP numbers 68.180.206.184 and 98.139.102.145 together, hereafter referred to as "IP group 1".

All of those use the five name servers ns1, ns2, ns3, ns4 and ns5.yahoo.com together (example: yahoovoip.net, emoticonadultyahoo.com and yautos.net ).
Most of them use only the mail server . (example: yahoostylelinkdirectory.com, countrymusicyahoo.com and downloadforyahoodslbrowser.com ).
The IP number 106.10.165.51
Three quarter of the several thousand of host names that point to the IP number 106.10.165.51 point to the five IP numbers 68.180.206.184, 77.238.178.122, 87.248.120.148, 98.139.102.145 and 106.10.165.51 together (example: hijauhost.ymail.com, www.att.yahoo.com and www.bloghoogle.com ).

The IP number 98.139.102.145
There are several thousand of host names that point to the IP number 98.139.102.145.

Two thirds of those use the name server ns5.yahoo.com (example: yahooessentials.com, yahoozimbra.us and yahoocamsluts.com ).
Two thirds of them use the name server ns3.yahoo.com (example: broadcast.com, yahoo.co.tt and downloadyahoodslins.com ).
Two thirds of them use the name server ns2.yahoo.com (example: yahpp.org, bitchpornyahoogroups.com and yahoo-algorithm-exposed.com ).
The IP number 68.180.206.184
There are several thousand of host names that point to the IP number 68.180.206.184.

Half of those use the name server ns4.yahoo.com (example: hooyahoo.com, yahpohotjobs.com and yahoomesennger.com ).
Half of them use the name server ns1.yahoo.com (example: ayhoo.org, yahoogames.biz and yahoosniffer.net ).
Half of them point to IP group 1 (example: yahoofreaks.net, inktomi-sucks.net and agencyexchange.com ).
The IP number 77.238.178.122
More than one in eight of the several thousand of host names that point to the IP number 77.238.178.122 point to the four IP numbers 68.180.206.184, 77.238.178.122, 98.139.102.145 and 106.10.165.51 together (but not 87.248.120.148 ) (example: address.yahoo.ca, *.yahool.com and www.yahoosexy.com ).