sco.cisco.com DNS trace

Root zone

These servers manage the DNS root zone

a.root-servers.net

198.41.0.4

AS397197

Anycast IP

2001:503:ba3e::2:30

AS397197

Anycast IP

b.root-servers.net

170.247.170.2

AS394353

Anycast IP

2801:1b8:10::b

AS394353

Anycast IP

c.root-servers.net

192.33.4.12

AS2149

Anycast IP

2001:500:2::c

AS2149

Anycast IP

d.root-servers.net

199.7.91.13

AS10886

Anycast IP

2001:500:2d::d

AS10886

Anycast IP

e.root-servers.net

192.203.230.10

AS21556

Anycast IP

2001:500:a8::e

AS21556

Anycast IP

f.root-servers.net

192.5.5.241

AS3557

Anycast IP

2001:500:2f::f

AS3557

Anycast IP

g.root-servers.net

192.112.36.4

AS5927

Anycast IP

2001:500:12::d0d

AS5927

Anycast IP

h.root-servers.net

198.97.190.53

AS1508

Anycast IP

2001:500:1::53

AS1508

Anycast IP

i.root-servers.net

192.36.148.17

AS29216

Anycast IP

2001:7fe::53

AS29216

Anycast IP

j.root-servers.net

192.58.128.30

AS396661

Anycast IP

2001:503:c27::2:30

AS396661

Anycast IP

k.root-servers.net

193.0.14.129

AS25152

Anycast IP

2001:7fd::1

AS25152

Anycast IP

l.root-servers.net

199.7.83.42

AS20144

Anycast IP

2001:500:9f::42

AS20144

Anycast IP

m.root-servers.net

202.12.27.33

AS7500

Anycast IP

2001:dc3::35

AS7500

Anycast IP

all servers delegate to

com.

These servers manage the com zone

a.gtld-servers.net

192.5.6.30

AS396555

Anycast IP

2001:503:a83e::2:30

AS396555

Anycast IP

b.gtld-servers.net

192.33.14.30

AS396661

Anycast IP

2001:503:231d::2:30

AS396654

Anycast IP

c.gtld-servers.net

192.26.92.30

AS396555

Anycast IP

2001:503:83eb::30

AS396555

Anycast IP

d.gtld-servers.net

192.31.80.30

AS396555

Anycast IP

2001:500:856e::30

AS396555

Anycast IP

e.gtld-servers.net

192.12.94.30

AS396555

Anycast IP

2001:502:1ca1::30

AS396555

Anycast IP

f.gtld-servers.net

192.35.51.30

AS397197

Anycast IP

2001:503:d414::30

AS397197

Anycast IP

g.gtld-servers.net

192.42.93.30

AS397197

Anycast IP

2001:503:eea3::30

AS397197

Anycast IP

h.gtld-servers.net

192.54.112.30

AS397197

Anycast IP

2001:502:8cc::30

AS397197

Anycast IP

i.gtld-servers.net

192.43.172.30

AS397197

Anycast IP

2001:503:39c1::30

AS397197

Anycast IP

j.gtld-servers.net

192.48.79.30

AS396566

Anycast IP

2001:502:7094::30

AS19836

Anycast IP

k.gtld-servers.net

192.52.178.30

AS396566

Anycast IP

2001:503:d2d::30

AS19836

Anycast IP

l.gtld-servers.net

192.41.162.30

AS396566

Anycast IP

2001:500:d937::30

AS19836

Anycast IP

m.gtld-servers.net

192.55.83.30

AS396566

Anycast IP

2001:501:b1f9::30

AS19836

Anycast IP

all servers delegate to

cisco.com.

These servers manage the cisco.com zone

a28-64.akam.net

a3-64.akam.net

ns1.cisco.com

2001:420:1101:6::a

AS109

United States of America

72.163.5.201

AS109

United States of America

ns2.cisco.com

2001:420:2041:5000::a

AS109

United States of America

64.102.255.44

AS109

United States of America

ns3.cisco.com

173.37.146.41

AS109

United States of America

2001:420:1201:7::a

AS109

United States of America

Inconsistent responses

We queried these DNS servers, but not all of them returned the same response. Select a group to see their response.

6 servers ns1.cisco.com./2001:420:1101:6:0:0:0:a ns1.cisco.com./72.163.5.201 ns2.cisco.com./2001:420:2041:5000:0:0:0:a ns2.cisco.com./64.102.255.44 ns3.cisco.com./173.37.146.41 ns3.cisco.com./2001:420:1201:7:0:0:0:a

4 servers a28-64.akam.net./2600:1480:d800:0:0:0:0:40 a28-64.akam.net./95.100.173.64 a3-64.akam.net./2600:1408:1c:0:0:0:0:40 a3-64.akam.net./96.7.49.64

sco.cisco.com.

These servers manage the sco.cisco.com zone

adns1.ironport.com

adns2.ironport.com

adns3.ironport.com

adns4.ironport.com

Inconsistent responses

We queried these DNS servers, but not all of them returned the same response. Select a group to see their response.

4 servers adns1.ironport.com./208.90.58.36 adns2.ironport.com./208.90.58.37 adns3.ironport.com./184.94.240.167 adns4.ironport.com./184.94.240.168

2 servers (timed out) adns1.ironport.com./2620:101:2005:1100:208:90:58:36 adns2.ironport.com./2620:101:2005:1100:208:90:58:37

These servers claim authority over sco.cisco.com

These servers timed out.