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DNSViz

A DNS visualization tool

columbia.edu

Updated: 2013-05-23 03:30:02 UTC (18 hours, 44 minutes ago) Update now
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DNS Server Status
NoticeNotice: The features on this page are not yet fully developed but it has been deployed in its infant form to further aid with DNS/DNSSEC troubleshooting. This page will be updated in due time to make it more useful for troubleshooting.

Delegation Information

NameParent zoneChild zoneAuthoritative IPs
Exists?Glue/additional recordsExists?
adns1.berkeley.eduyesA 128.32.136.3yesA128.32.136.3
AAAAAAAA2607:f140:ffff:fffe::3
adns2.berkeley.eduyesA 128.32.136.14yesA128.32.136.14
AAAAAAAA2607:f140:ffff:fffe::e
ext-ns1.columbia.eduyesA 128.59.1.1yesA128.59.1.1
AAAAAAAA
dns2.itd.umich.eduyesA 141.211.125.15yesA141.211.125.15
AAAAAAAA
sns-pb.isc.orgyesN/A (out of bailiwick)yesA192.5.4.1
AAAA2001:500:2e::1
ns1.lse.ac.ukyesN/A (out of bailiwick)yesA158.143.233.4
158.143.96.8
AAAA2002:9e8f:e904::9e8f:e904
2002:9e8f:6008::9e8f:6008

Server information

adns1.berkeley.edu. (128.32.136.3)adns1.berkeley.edu. (2607:f140:ffff:fffe::3)adns2.berkeley.edu. (128.32.136.14)adns2.berkeley.edu. (2607:f140:ffff:fffe::e)ext-ns1.columbia.edu. (128.59.1.1)dns2.itd.umich.edu. (141.211.125.15)sns-pb.isc.org. (192.5.4.1)sns-pb.isc.org. (2001:500:2e::1)ns1.lse.ac.uk. (158.143.233.4)ns1.lse.ac.uk. (158.143.96.8)ns1.lse.ac.uk. (2002:9e8f:e904::9e8f:e904)ns1.lse.ac.uk. (2002:9e8f:6008::9e8f:6008)
Responsive over UDPOKOKOKOKOKOKOKOKOKOKERRERR
Responsive over TCPOKOKOKOKOKOKOKOKOKOK
Answers authoritatively (AA bit)OKOKOKOKOKOKOKOKOKOK
SOA serial consistentOKOKOKOKOKOKOKOKOKOK
SOA authority correct (NXDOMAIN)OKOKOKOKOKOKOKOKOKOK
SOA consistent (NXDOMAIN)OKOKOKOKOKOKOKOKOKOK
SOA authority correct (Empty Answer)OKOKOKOKOKOKOKOKOKOK
SOA consistent (Empty Answer)OKOKOKOKOKOKOKOKOKOK
EDNS capableOKOKOKOKOKOKOKOKOKOK
PMTU sufficient
Returns DNSKEY
Returns RRSIG
Returns NSEC/NSEC3 (NXDOMAIN)
Returns RRSIG covering NSEC/NSEC3 (NXDOMAIN)
Returns NSEC/NSEC3 (Empty Answer)
Returns RRSIG covering NSEC/NSEC3 (Empty Answer)