DNSViz Home » columbia.edu

DNSViz

A DNS visualization tool

columbia.edu

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 128.59.59.165yesA128.59.59.165
AAAAAAAA
dns2.itd.umich.eduyesA 141.211.125.15yesA141.211.125.15
AAAAAAAA
ns1.lse.ac.ukyesN/A (out of bailiwick)yesA158.143.96.8
AAAA

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. (128.59.59.165)dns2.itd.umich.edu. (141.211.125.15)ns1.lse.ac.uk. (158.143.96.8)
Responsive over UDPOKOKOKOKOKOKOK
Responsive over TCPOKOKOKOKOKOKOK
Answers authoritatively (AA bit)OKOKOKOKOKOKOK
SOA serial consistentOKOKOKOKOKOKOK
SOA authority correct (NXDOMAIN)OKOKOKOKOKOKOK
SOA consistent (NXDOMAIN)OKOKOKOKOKOKOK
SOA authority correct (Empty Answer)OKOKOKOKOKOKOK
SOA consistent (Empty Answer)OKOKOKOKOKOKOK
EDNS capableOKOKOKOKOKOKOK
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)