221.157.116.0/24

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Parent Range	221.144.0.0/12
Registry	APNIC
ID	KORNET-KR

WHOIS Details

inetnum:        221.144.0.0 - 221.159.255.255
netname:        KORNET
descr:          Korea Telecom
country:        KR
admin-c:        IM667-AP
tech-c:         IM667-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2025-11-03T08:15:09Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-09-04T01:00:01Z
source:         APNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM667-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2017-03-28T06:37:04Z
source:         APNIC

inetnum:        221.144.0.0 - 221.159.255.255
netname:        KORNET-KR
descr:          Korea Telecom
country:        KR
admin-c:        IA9-KR
tech-c:         IM9-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 221.157.116.0/24

Range	ASN	Company	Num of IPs
221.144.0.0/12	AS9856	Korea Telecom	1,048,576
221.144.0.0/12	AS10185	Korea Telecom	1,048,576
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.144.0.0/12	AS17576	Korea Telecom	1,048,576
221.144.0.0/12	AS17851	Korea Telecom	1,048,576
221.144.0.0/12	AS38405	Korea Telecom	1,048,576
221.144.0.0/12	AS38697	Korea Telecom	1,048,576
221.144.0.0/12	AS45360	Korea Telecom	1,048,576
221.144.0.0/12	AS45400	Korea Telecom	1,048,576
221.144.0.0/12	AS4766	Korea Telecom	1,048,576
221.144.0.0/12	AS10184	Korea Telecom	1,048,576
221.144.0.0/12	AS55622	Korea Telecom	1,048,576
221.144.0.0/12	AS9526	Korea Telecom	1,048,576
221.144.0.0/12	AS9850	Korea Telecom	1,048,576

Nearby Ranges

BGP prefixes that overlap with 221.157.0.0/16

Range	ASN	Company	Num of IPs
221.144.0.0/12	AS10184	Korea Telecom	1,048,576
221.144.0.0/12	AS10185	Korea Telecom	1,048,576
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.144.0.0/12	AS17576	Korea Telecom	1,048,576
221.144.0.0/12	AS17851	Korea Telecom	1,048,576
221.144.0.0/12	AS38405	Korea Telecom	1,048,576
221.144.0.0/12	AS38697	Korea Telecom	1,048,576
221.144.0.0/12	AS45360	Korea Telecom	1,048,576
221.144.0.0/12	AS45400	Korea Telecom	1,048,576
221.144.0.0/12	AS4766	Korea Telecom	1,048,576
221.144.0.0/12	AS55622	Korea Telecom	1,048,576
221.144.0.0/12	AS9526	Korea Telecom	1,048,576
221.144.0.0/12	AS9850	Korea Telecom	1,048,576
221.144.0.0/12	AS9856	Korea Telecom	1,048,576

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
66.93.244.40	AS3257 GTT Communications Inc.	`0.60ms` from Ashburn, US
111.195.207.120	AS4808 China Unicom Beijing Province Network	`6.75ms` from Beijing, CN
34.208.65.136	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
24.147.143.24	AS7922 Comcast Cable Communications, LLC	`6.67ms` from Boston, US
185.254.244.40	AS204065 OXITGEN AG	`5.45ms` from Duesseldorf, DE
38.249.3.168	AS135357 HONG KONG KOWLOON TELECOMMUNICATIONS CO.,LIMITED	`1.16ms` from Hong Kong, HK
67.64.179.8	AS7018 AT&T Enterprises, LLC	`1.34ms` from Houston, US
116.138.127.72	AS4837 CHINA UNICOM China169 Backbone	`5.63ms` from Liaoyang, CN
195.10.199.184	AS396982 Google LLC	`0.09ms` from London, GB
212.170.244.232	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.62ms` from Madrid, ES
20.70.124.24	AS8075 Microsoft Corporation	`0.68ms` from Melbourne, AU
79.10.227.72	AS3269 Telecom Italia S.p.A.	`7.13ms` from Milan, IT
91.22.254.136	AS3320 Deutsche Telekom AG	`4.43ms` from Nuernberg, DE
123.103.179.8	AS7690 Mirai Communication Network Inc.	`6.46ms` from Osaka, JP
13.39.54.72	AS16509 Amazon.com, Inc.	`0.13ms` from Paris, FR
3.80.230.200	AS14618 Amazon.com, Inc.	`0.46ms` from Reston, US
37.116.134.136	AS30722 Vodafone Italia S.p.A.	`8.94ms` from Rome, IT
51.79.149.104	AS16276 OVH SAS	`0.33ms` from Singapore, SG
197.167.224.200	AS24863 Link Egypt (Link.NET)	`8.85ms` from Cairo, EG
159.118.89.232	AS11492 CABLE ONE, INC.	`3.44ms` from Dallas, US
185.127.178.8	AS56443 IP WAY LLC	`0.39ms` from Frankfurt am Main, DE
87.65.23.88	AS5432 Proximus NV	`4.91ms` from Gravelines, FR
34.23.159.232	AS396982 Google LLC	`0.14ms` from Moncks Corner, US
15.156.241.56	AS16509 Amazon.com, Inc.	`0.14ms` from Montreal, CA
72.186.212.88	AS33363 Charter Communications, Inc	`5.24ms` from Orlando, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f7 -m13 221.157.116.62

traceroute to 221.157.116.62 (221.157.116.62): 13 hops max, 52 byte packets

7 [AS4766] 112.174.100.42 6.486 ms

8 *

9 *

10 [AS4766] 121.150.184.10 5.871 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On November 14th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

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