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
All
Domains
IPs
Tools
google.com
microsoft.com
facebook.com
apple.com
youtube.com
pinterest.com
wikipedia.org
amazon.com
216.73.216.138
Your IP
DNS Lookup
DNS Propagation Checker
SPF Record Lookup
A Record Lookup
AAAA Record Lookup
CNAME Record Lookup
TXT Record Lookup
MX Record Lookup
DNS History
Tab
Cycle tabs
Navigate
Open
Domain name
auth2.dns.cogentco.com
google.com
microsoft.com
facebook.com
apple.com
youtube.com
pinterest.com
wikipedia.org
amazon.com
DNS Lookup
DNS Propagation Checker
SPF Record Lookup
A Record Lookup
AAAA Record Lookup
CNAME Record Lookup
TXT Record Lookup
MX Record Lookup
DNS History
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
History
Propagation
Trace
Zone transfer
Full zone transfer
Incremental zone transfer
Email
auth2.dns.cogentco.com
DNS history
Filter record types
A
AAAA
CNAME
NS
MX
TXT
SOA
No record changes with these filters
Try selecting a different DNS record type.
First observed
A
+1
-0
+
auth2.dns.cogentco.com 10800 A 66.28.0.30
AAAA
+1
-0
+
auth2.dns.cogentco.com 43200 AAAA 2001:550:1:b::d
SOA
+1
-0
+
dns.cogentco.com 3600 SOA auth1.dns.cogentco.com dns.cogentco.com 2026041502 10800 3600 604800 43200