go
mx5.level3.com has one IP number , which also has a corresponding reverse pointer. mx5.l3.com point to the same IP. mediaplane.net use this as a mailserver. level3.com is delegated to two nameservers, however both delegated nameservers are missing in the zone and two other nameservers are listed instead. There are two duplicated IP numbers. Some of them are on the same IP network. Incoming mail for level3.com is handled by two mailservers having a total of eight IP numbers. There are six duplicated IP numbers. Some of them are on the same IP network. level3.com has one IP number. mx5.level3.com is hosted on a server in United States.

mx5.level3.com
a records
 
+ 209.245.18.163 209.244.0.0/14 AS3356 -
+ --- -

level3.com
a records
 
+ 4.68.95.11 4.0.0.0/9 AS3356  
+ ---  
ns-soa records
ns2.level3.net
+ 209.244.0.2 209.244.0.0/14 AS3356 -
+ --- -
ns records
ns1.l3.net
+ 209.244.0.1 209.244.0.0/14 AS3356 ns1.level3.net
+ --- ns1.level3.net
ns2.l3.net
+ 209.244.0.2 209.244.0.0/14 AS3356 ns2.level3.net
+ --- ns2.level3.net
ns1.level3.net
+ 209.244.0.1 209.244.0.0/14 AS3356 -
+ --- -
ns2.level3.net
+ 209.244.0.2 209.244.0.0/14 AS3356 -
mx records
cluster8.us.messagelabs.com
+ 216.82.241.83 216.82.240.0/22 AS26282 mail37.messagelabs.com
+ --- mail37.messagelabs.com
+ 216.82.241.99 216.82.240.0/22 AS26282 mail51.messagelabs.com
+ --- mail51.messagelabs.com
+ 216.82.249.131 216.82.248.0/22 AS26282 mail28.messagelabs.com
+ --- mail28.messagelabs.com
+ 216.82.249.147 216.82.248.0/22 AS26282 mail29.messagelabs.com
+ --- mail29.messagelabs.com
+ 216.82.254.195 216.82.252.0/22 AS26282 mail200.messagelabs.com
+ --- mail200.messagelabs.com
+ 216.82.254.211 216.82.252.0/22 AS26282 mail201.messagelabs.com
+ --- mail201.messagelabs.com
cluster8a.us.messagelabs.com
+ 216.82.241.83 216.82.240.0/22 AS26282 mail37.messagelabs.com
+ --- mail37.messagelabs.com
+ 216.82.241.99 216.82.240.0/22 AS26282 mail51.messagelabs.com
+ --- mail51.messagelabs.com
+ 216.82.248.44 216.82.248.0/22 AS26282 mail554.messagelabs.com
+ --- mail554.messagelabs.com
+ 216.82.248.45 216.82.248.0/22 AS26282 mail555.messagelabs.com
+ --- mail555.messagelabs.com
+ 216.82.249.131 216.82.248.0/22 AS26282 mail28.messagelabs.com
+ --- mail28.messagelabs.com
+ 216.82.249.147 216.82.248.0/22 AS26282 mail29.messagelabs.com
+ --- mail29.messagelabs.com
+ 216.82.254.195 216.82.252.0/22 AS26282 mail200.messagelabs.com
+ --- mail200.messagelabs.com
+ 216.82.254.211 216.82.252.0/22 AS26282 mail201.messagelabs.com
+ --- mail201.messagelabs.com
ip numbers of host
209.245.18.163
ptrs of ip numbers
mx5.level3.com
ip numbers using ptr to this host
209.245.18.163
hostnames sharing ip with a-records
mx5.l3.com
domains using this as mailserver
mediaplane.net
nameservers missing in parent delegation
ns1.level3.net
ns2.level3.net
nameservers missing in zone
ns1.l3.net
ns2.l3.net