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skm.com.tw is delegated to four nameservers, however two delegated nameservers are missing in the zone. All nameservers are at skm.com.tw themselves. There are two duplicated IP numbers. Some of them are on the same IP network. Incoming mail for skm.com.tw is handled by six mailservers also at skm.com.tw. Some of them are on the same IP network. dns.skm.com.tw, owa.skm.com.tw, www.skm.com.tw, mail.skm.com.tw, admin.skm.com.tw and at least six other hosts are subdomains to this hostname. com.tw is a domain controlled by eight nameservers. All of them are on different IP networks.

skm.com.tw
ns-soa records
001aemw02.skm.com.tw
+   AS?  
+ ---  
ns records
01sv02.skm.com.tw
+   AS?  
+ ---  
dns.skm.com.tw
+   AS?  
skmweb.skm.com.tw
+ 210.59.231.153 210.59.128.0/17 AS3462  
001aemw02.skm.com.tw
+   AS?  
mx records
mail.skm.com.tw
+ 211.75.102.228 211.75.0.0/16 AS3462 -
+ --- -
mail2.skm.com.tw
+ 211.75.102.227 211.75.0.0/16 AS3462 owa.skm.com.tw
+ --- owa.skm.com.tw
www.skm.com.tw
+ 210.59.231.153 210.59.128.0/17 AS3462  
+ ---  
001aemw02.skm.com.tw
+   AS?  
mail3.skm.com.tw
+ 211.75.102.231 211.75.0.0/16 AS3462 211-75-102-231.hinet-ip.hinet.net
+ --- 211-75-102-231.hinet-ip.hinet.net
001aemw01.skm.com.tw
+ 10.1.101.54 10.0.0.0/8 AS6067  
+ ---  

com.tw
ns-soa records
a.twnic.net.tw
+ 192.83.166.9 192.83.166.0/23 AS1659 -
+ --- -
ns records
ns2.cuhk.edu.hk
+ 137.189.6.21 137.189.0.0/16 AS3661 barnowl.itsc.cuhk.edu.hk
+ --- barnowl.itsc.cuhk.edu.hk
a.twnic.net.tw
+ 192.83.166.9 192.83.166.0/23 AS1659 -
+ --- -
b.twnic.net.tw
+ 192.72.81.200 192.72.80.0/23 AS4780 -
c.twnic.net.tw
+ 168.95.192.10 168.95.0.0/16 AS3462 -
d.twnic.net.tw
+ 210.17.9.229 210.17.0.0/17 AS4747 -
e.twnic.net.tw
+ 211.79.207.25 211.79.192.0/20 AS17420 -
f.twnic.net.tw
+ 220.229.225.196 220.229.224.0/19 AS9919 -
g.twnic.net.tw
+ 203.119.3.2 203.119.3.0/24 AS18417  
+ ---  
Name servers used by this domain
001aemw02.skm.com.tw
01sv02.skm.com.tw
dns.skm.com.tw
skmweb.skm.com.tw
IP numbers of name servers
210.59.231.153
Other names of the name servers
www.idee.com.tw
www.skm.com.tw
Mail servers used by this domain
001aemw01.skm.com.tw
001aemw02.skm.com.tw
mail.skm.com.tw
mail2.skm.com.tw
mail3.skm.com.tw
www.skm.com.tw
IP numbers of mail servers
10.1.101.54
210.59.231.153
211.75.102.227
211.75.102.228
211.75.102.231
Reverse names of the mail servers
211-75-102-231.hinet-ip.hinet.net
mail.skm.com.tw
owa.skm.com.tw
Other names of the mail servers
skmweb.skm.com.tw
www.idee.com.tw
Subdomains
001aemw01.skm.com.tw
001aemw02.skm.com.tw
01sv02.skm.com.tw
admin.skm.com.tw
dns.skm.com.tw
mail.skm.com.tw
mail2.skm.com.tw
mail3.skm.com.tw
owa.skm.com.tw
skmweb.skm.com.tw
www.skm.com.tw
Name servers missing in zone
01sv02.skm.com.tw
skmweb.skm.com.tw