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iamroot.tech
Internet tools
DNS lookup
DNS propagation check
Port scan + probeing
WHOIS / RDAP lookup
updated
HTTP/S request tool
TLS/SSL certificate check
beta
E-mail DNSBL blacklist check
Reverse DNS
CIDR calculator
beta
ASN database lookup
beta
What is my IPv4 and IPv6?
GeoIP location
QR code generator
Dev tools
Color contrast checker
Color picker
Lorem ipsum generator
URL encode/decode
HTML encode/decode
BASE64 encode/decode
Hash calculator (CRC64 - MD5 - SHA - RIPEMD)
Misc tools
Password generator
World map, day/night + local time
beta
Internet tools
DNS lookup
DNS propagation check
Port scan + probeing
WHOIS / RDAP lookup
updated
HTTP/S request tool
TLS/SSL certificate check
beta
E-mail DNSBL blacklist check
Reverse DNS
CIDR calculator
beta
ASN database lookup
beta
What is my IPv4 and IPv6?
GeoIP location
QR code generator
Dev tools
Color contrast checker
Color picker
Lorem ipsum generator
URL encode/decode
HTML encode/decode
BASE64 encode/decode
Hash calculator (CRC64 - MD5 - SHA - RIPEMD)
Misc tools
Password generator
World map, day/night + local time
beta
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Related tools
DNS lookup
DNS lookup / nslookup / DIG of DNS records. An online tool for DNS lookups. By default recursive lookups querying the authoritative name servers. Lookups on specific DNS resolvers are also possible. Additionally, it will look up secondary records and output a full log of what was done on a technical level.
WHOIS / RDAP lookup
updated
221.160.0.0
Reverse DNS
221.160.0.0
CIDR calculator
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IP to CIDR calculation tool with subnet info. The reverse, CIDR ranges to IP addresses, is also possible. Last but not least, it includes a tool for refactoring groups of IPs, domain names, and/or other CIDR ranges.
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Check your own IP - both IPv4 and IPv6. Works as a connectivity test as well.
GeoIP location
221.160.0.0
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Result
221.160.0.0/13
Prefix:
221.160.0.0/13
(
524.288 IP's - view in CIDR to IP tool
)
Description:
Korea Telecom
Country:
Korea (South)
Announced by:
Korea Telecom
https://www.kt.com/eng/main.jsp
AS4766, 615 peers, 1.099 announced prefixes
See all details on AS4766 - Korea Telecom »
Matching prefixes
Country
ASN
Announced prefix
Description
Size
Korea (South)
AS4766
221.160.0.0/13
Korea Telecom
524.288
Korea (South)
AS38422
221.160.151.0/24
Korea Telecom
256
Korea (South)
AS38422
221.160.183.0/24
Korea Telecom
256
Korea (South)
AS23562
221.161.97.0/25
Korea Telecom
128
Korea (South)
AS23562
221.161.97.128/25
Korea Telecom
128
Korea (South)
AS9780
221.161.160.0/24
Korea Telecom
256
Korea (South)
AS45377
221.162.24.0/24
Korea Telecom
256
Korea (South)
AS18323
221.163.32.0/24
Korea Telecom
256
Korea (South)
AS55633
221.163.211.128/27
Korea Telecom
32
Korea (South)
AS9631
221.164.0.0/24
Korea Telecom
256
Korea (South)
AS9631
221.164.1.0/24
Korea Telecom
256
Korea (South)
AS9631
221.164.2.0/24
Korea Telecom
256
Korea (South)
AS9631
221.164.3.0/24
Korea Telecom
256
Korea (South)
AS9631
221.164.4.0/28
Korea Telecom
16
Korea (South)
AS9631
221.164.4.16/28
Korea Telecom
16
Korea (South)
AS9631
221.164.4.32/28
Korea Telecom
16
Korea (South)
AS9631
221.164.4.48/28
Korea Telecom
16
Korea (South)
AS9631
221.164.5.0/24
Korea Telecom
256
Korea (South)
AS131101
221.164.9.0/24
Korea Telecom
256
Korea (South)
AS9631
221.164.68.0/24
Korea Telecom
256
Korea (South)
AS9631
221.164.69.0/24
Korea Telecom
256
Korea (South)
AS9631
221.164.70.0/24
Korea Telecom
256
Korea (South)
AS9631
221.164.71.0/24
Korea Telecom
256
Korea (South)
AS9862
221.165.31.0/24
Korea Telecom
256
Korea (South)
AS17847
221.165.136.192/26
Korea Telecom
64
- - show more (+14 entries) - -
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Log
000
+000
Parse input (Prefix)
000
+000
Search database for '221.160.0.0/13'
016
+016
25 prefixes found
016
+000
Done