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
mx4.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
IP addresses
Propagation
Trace
Zone transfer
Full zone transfer
Incremental zone transfer
Email
mx4.cogentco.com
IP addresses from 2026-05-18 to 2026-05-24
Archived
just now
View record changes
Now
2026-05-18
A
IPv4 address
12h
Time to live
View CLI command
Local DNS resolver
macOS
Windows
Linux
Check propagation
154.57.145.70
Cogent Communications
AS174
Netherlands
Halfweg, North Holland
AAAA
IPv6 address
0s
Time to live
View CLI command
Local DNS resolver
macOS
Windows
Linux
Check propagation
mx4.cogentco.com has no AAAA records.