Wirewiki
Domains
DNS servers
IPs
Learning
DNS for Developers
Company
About
Press
Contact
Follow me on 𝕏
Privacy
Terms
Search
Ctrl + K
Search
Open main menu
Domains
DNS servers
IPs
Learning
DNS for Developers
Company
About
Press
Contact
Follow me on 𝕏
Privacy
Terms
DNS root
Your IP
Tab
Cycle tabs
Navigate
Open
Domain name
ext-ns1.columbia.edu
DNS root
Your IP
Tab
Cycle tabs
Navigate
Open
DNS
Records
All common record types
IP addresses
A
AAAA
AFSDB
APL
AXFR
CAA
CDNSKEY
CDS
CERT
CNAME
CSYNC
DHCID
DLV
DNAME
DNSKEY
DS
EUI48
EUI64
HINFO
HIP
HTTPS
IPSECKEY
IXFR
KEY
KX
LOC
MX
NAPTR
NS
NSEC3
NSEC3PARAM
NSEC
NXT
OPENPGPKEY
OPT
PTR
RP
RRSIG
SIG
SMIMEA
SOA
SPF
SSHFP
SVCB
SRV
TA
TKEY
TLSA
TSIG
TXT
URI
ZONEMD
IP addresses
History
Propagation
Trace
Zone transfer
Full zone transfer
Incremental zone transfer
Email
ext-ns1.columbia.edu
IP addresses
Queried
just now
View record changes
Now
2026-05-27
A
IPv4 address
1h
Time to live
View CLI command
Local DNS resolver
Authoritative DNS server
macOS
Windows
Linux
Check propagation
128.59.1.1
Columbia University
AS14
United States of America
New York City, New York
AAAA
IPv6 address
0s
Time to live
View CLI command
Local DNS resolver
Authoritative DNS server
macOS
Windows
Linux
Check propagation
ext-ns1.columbia.edu has no AAAA records.
Thank you!
Can I follow up on this?
No thanks
Add email address