go
ns1.level3.net has one IP number , which also has a corresponding reverse pointer. ns1.l3.net and ns1.lvlt.net point to the same IP. l3.net, l3.com, lll.com, lvlt.com, bwng.com and at least 100 other hosts use this as a nameserver. level3.net 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.net 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.net has one IP number. ns1.level3.net is hosted on a server in United States.

ns1.level3.net
a records
 
+ 209.244.0.1 209.244.0.0/14 AS3356 -
+ --- -

level3.net
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
209.244.0.1
ptrs of ip numbers
ns1.level3.net
ip numbers using ptr to this host
209.244.0.1
hostnames sharing ip with a-records
ns1.l3.net
ns1.lvlt.net
domains using this as nameserver
0.209.in-addr.arpa
10.8.in-addr.arpa
11.8.in-addr.arpa
119.131.in-addr.arpa
121.207.in-addr.arpa
125.244.209.in-addr.arpa
15.8.in-addr.arpa
152.64.in-addr.arpa
154.64.in-addr.arpa
156.90.207.in-addr.arpa
157.244.209.in-addr.arpa
157.64.in-addr.arpa
159.64.in-addr.arpa
16.244.209.in-addr.arpa
186.244.209.in-addr.arpa
208.63.in-addr.arpa
209.63.in-addr.arpa
211.63.in-addr.arpa
214.63.in-addr.arpa
215.63.in-addr.arpa
233.192.in-addr.arpa
24.67.in-addr.arpa
244.209.in-addr.arpa
247.209.in-addr.arpa
28.67.in-addr.arpa
29.67.in-addr.arpa
31.198.in-addr.arpa
4.in-addr.arpa
44.244.209.in-addr.arpa
5.244.209.in-addr.arpa
59.65.in-addr.arpa
6.244.209.in-addr.arpa
7.244.209.in-addr.arpa
71.52.192.in-addr.arpa
76.198.in-addr.arpa
77.198.in-addr.arpa
78.4.in-addr.arpa
79.198.in-addr.arpa
79.4.in-addr.arpa
8.244.209.in-addr.arpa
8.8.in-addr.arpa
8.in-addr.arpa
90.166.in-addr.arpa
92.198.in-addr.arpa
95.198.in-addr.arpa
ams1.level3.net
amsterdam1.level3.net
atlanta1.level3.net
atlanta2.level3.net
austin1.level3.net
baltimore1.level3.net
beautifulnetwork.info
berlin1.level3.net
boston1.level3.net
broad-wing.org
broadwing.biz
broadwing.com
broadwing.org
broadwingcommunication.net
broomfield1.level3.net
brussels1.level3.net
brwoclass.com
brwoclass.net
brwopn.com
brwopn.net
buffalo1.level3.net
bwng.com
charlotte1.level3.net
chicago1.level3.net
cincinnati1.level3.net
cleveland1.level3.net
copenhagen1.level3.net
corpsoft-ec.com
corvis.com
customer.level3.net
dallas1.level3.net
denver1.level3.net
detroit1.level3.net
dublin1.level3.net
dus1.level3.net
dusseldorf1.level3.net
eng.level3.net
frankfurt1.level3.net
frf1.level3.net
geneva1.level3.net
greensboro1.level3.net
greenville1.level3.net
ham1.level3.net
hamburg1.level3.net
honolulu1.level3.net
hou1.level3.net
houston1.level3.net
indianapolis1.level3.net
l3.com
l3.net
lab.level3.net
lasvegas1.level3.net
lax1.level3.net
lglass.net
lll.com
lon1.level3.net
lon2.level3.net
london1.level3.net
london2.level3.net
london3.level3.net
losangeles1.level3.net
lvlt.com
lvlt.net
madrid1.level3.net
manchester1.level3.net
manchesteruk1.level3.net
miami1.level3.net
milan1.level3.net
minneapolis1.level3.net
mun1.level3.net
munich1.level3.net
nashville1.level3.net
newark1.level3.net
neworleans1.level3.net
weehawken1.level3.net
domains using this as nameserver under another name
139.90.207.in-addr.arpa
15.244.209.in-addr.arpa
156.64.in-addr.arpa
158.64.in-addr.arpa
168.244.209.in-addr.arpa
170.244.209.in-addr.arpa
18.244.209.in-addr.arpa
183.205.in-addr.arpa
210.63.in-addr.arpa
212.63.in-addr.arpa
213.63.in-addr.arpa
245.209.in-addr.arpa
246.209.in-addr.arpa
3.8.in-addr.arpa
30.67.in-addr.arpa
34.206.in-addr.arpa
3crossroads.com
3crossroads.net
57.65.in-addr.arpa
58.65.in-addr.arpa
68.4.in-addr.arpa
72.67.in-addr.arpa
78.198.in-addr.arpa
83.207.in-addr.arpa
93.198.in-addr.arpa
albany1.level3.net
altchannels.com
baltimore1.l3.net
beautifulnetwork.info
birmingham1.level3.net
broad-wing.net
broad-wing.org
broadwing.biz
broadwing.com
broadwing.org
broadwingcommunication.com
broadwingcommunication.net
broadwingcorporation.com
brwoclass.net
brwopn.com
brwopn.net
bwng.com
corvis.com
dal1.level3.net
epik.net
everett1.level3.net
gardencity1.level3.net
ipontap.com
ixc-comm.com
l3.com
l3.net
level3.com
level3.eu
level3.net
level3.sg
level3communication.com
level3communications.com
level3delivers.com
level3network.com
level3partners.com
level3routedigital.com
levelthree.com
lglass.net
lll.com
losangeles2.level3.net
louisville1.level3.net
lvlt.net
mediaplane.net
memphis1.level3.net
newyork1.voice.level3.net
norfolk1.level3.net
pittsburgh1.level3.net
pksis.com
polywrld.com
portallogin.com
portland1.level3.net
prague1.level3.net
sanantonio1.level3.net
sea1.level3.net
xcom.net
nameservers missing in parent delegation
ns1.level3.net
ns2.level3.net
nameservers missing in zone
ns1.l3.net
ns2.l3.net
used as nameserver but missing in parent delegation
174.21.4.in-addr.arpa
altchannels.com
beautifulnetwork.info
broad-wing.org
broadwing.biz
broadwing.com
broadwing.org
broadwingcommunication.net
brwoclass.net
brwopn.com
brwopn.net
bwng.com
corvis.com
l3.com
l3.net
level3.com
level3.net
level3cdn.com
level3delivers.com
levelthree.com
lglass.net
lll.com
lvlt.net
pksis.com
xcom.net
used as nameserver but missing in zone
ecommunityplus.net
efinanceplus.net
egovplus.net