All IP Ranges
221.0.0.0/8
AS4766 | 221.160.0.0/13

221.160.0.0/13

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Registry	APNIC
ID	KORNET

WHOIS Details

inetnum:        221.160.0.0 - 221.167.255.255
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:  2025-11-03T08:15:10Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        [email protected] 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:         [email protected]
nic-hdl:        IM667-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2017-03-28T06:37:04Z
source:         APNIC

inetnum:        221.160.0.0 - 221.167.255.255
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:         [email protected]
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 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:         [email protected]
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 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 are contained by 221.160.0.0/13

Range	ASN	Company	Num of IPs
221.163.32.0/24	AS18323	Bundangseouldaehakgyobyeongwon	256
221.160.151.0/24	AS38422	Seowondaehakgyo	256
221.160.183.0/24	AS38422	Seowondaehakgyo	256
221.160.143.0/24	AS4766	Semyeongdaehakgyo	256
221.160.178.0/24	AS4766	Korea Telecom	256
221.160.197.0/24	AS4766	Hanseodaehakgyo	256
221.160.30.0/24	AS4766	Korea Telecom	256
221.162.86.0/24	AS4766	KT	256
221.164.9.0/24	AS131101	Korea Telecom	256
221.161.160.0/24	AS9780	Injedaehakgyo	256
221.164.0.0/24	AS9631	Yeongsandaehakgyo	256
221.164.1.0/24	AS9631	Yeongsandaehakgyo	256
221.164.2.0/24	AS9631	Yeongsandaehakgyo	256
221.164.3.0/24	AS9631	Yeongsandaehakgyo	256
221.164.5.0/24	AS9631	Yeongsandaehakgyo	256
221.164.68.0/24	AS9631	Yeongsandaehakgyo	256
221.164.69.0/24	AS9631	Yeongsandaehakgyo	256
221.164.70.0/24	AS9631	Yeongsandaehakgyo	256
221.164.71.0/24	AS9631	Yeongsandaehakgyo	256

Nearby Ranges

BGP prefixes that overlap with 221.0.0.0/8

Range	ASN	Company	Num of IPs
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.240.0.0/12	AS17506	ARTERIA Networks Corporation	1,048,576
221.144.0.0/12	AS4766	Korea Telecom	1,048,576
221.144.0.0/12	AS9856	Korea Telecom	1,048,576
221.176.0.0/13	AS139080	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS140292	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS134770	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS146966	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS137702	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS138950	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS24445	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS131325	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS23650	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS4809	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS9808	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS141425	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS4134	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS132510	China Mobile Communications Corporation	524,288
221.216.0.0/13	AS4808	China Unicom Beijing province network	524,288
221.224.0.0/13	AS134756	CHINANET jiangsu province network	524,288
221.184.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
221.224.0.0/13	AS137697	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56040	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56044	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56048	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56042	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56046	China Mobile Communications Corporation	524,288
221.232.0.0/14	AS58563	CHINANET Hubei province network	262,144
221.124.0.0/14	AS9304	HGC Global Communications Limited	262,144
221.232.0.0/14	AS4134	CHINANET Hubei province network	262,144
221.140.0.0/14	AS9318	SK Broadband Co Ltd	262,144
221.200.0.0/14	AS4837	China Unicom Liaoning Province Network	262,144
221.204.0.0/15	AS4837	China Unicom Shanxi Province Network	131,072
221.8.0.0/15	AS4837	China Unicom JILIN province network	131,072
221.170.0.0/15	AS2518	BIGLOBE Inc.	131,072
221.130.0.0/15	AS9808	China Mobile Communications Corporation	131,072
221.214.0.0/15	AS4837	China Unicom Shandong province network	131,072
221.138.0.0/15	AS9318	SK Broadband Co Ltd	131,072
221.130.0.0/15	AS56041	China Mobile Communications Corporation	131,072
221.130.0.0/15	AS56042	China Mobile Communications Corporation	131,072
221.6.0.0/16	AS140717	China Unicom Jiangsu province network	65,536
221.10.0.0/16	AS4837	China Unicom SiChuan province network	65,536
221.168.0.0/16	AS4766	Korea Telecom	65,536
221.206.0.0/16	AS4837	China Unicom Heilongjiang Province Network	65,536
221.137.0.0/16	AS9812	Oriental Cable Network Co., Ltd.	65,536
221.117.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.116.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.115.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.114.0.0/16	AS17506	ARTERIA Networks Corporation	65,536

Hosted domains

There are 688 domain names hosted across 319 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
221.161.197.55	vaimedia.com	77
221.161.197.34	geoje-rio.com	66
221.167.210.244	tess.kr	23
221.163.201.52	udmtek-company.com	15
221.160.135.15	xn--hz2b91erwftqdczu.com	12
221.162.94.238	piting.kr	11
221.161.197.196	geummalogistics.com	10
221.162.37.119	0970.co.kr	8
221.165.185.139	gotem.kr	8
221.165.153.136	gahbin.com	8
221.161.136.17	pnuh.org	7
221.161.197.197	hankookt.net	7
221.164.14.38	disabledsafety.com	6
221.161.97.170	xn--9t4bi0fwvo.kr	6
221.164.83.57	sejinintc.com	6
221.163.60.144	yuratech.kr	6
221.161.197.185	bizchart.co.kr	6
221.167.230.72	namichoon.com	5
221.165.27.251	010car.kr	5
221.163.48.130	yuzasoft.co.kr	5

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

297,978 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
221.166.65.191	AS4766 Korea Telecom	`1.73ms` from Seoul, KR
221.166.84.31	AS4766 Korea Telecom	`1.75ms` from Seoul, KR
221.166.204.151	AS4766 Korea Telecom	`6.07ms` from Seoul, KR
221.166.188.247	AS4766 Korea Telecom	`4.41ms` from Seoul, KR
221.166.192.252	AS4766 Korea Telecom	`6.19ms` from Seoul, KR
221.166.164.20	AS4766 Korea Telecom	`5.00ms` from Seoul, KR
221.166.211.187	AS4766 Korea Telecom	`5.20ms` from Seoul, KR
221.166.155.43	AS4766 Korea Telecom	`4.94ms` from Seoul, KR
221.166.52.24	AS4766 Korea Telecom	`1.69ms` from Seoul, KR
221.166.161.94	AS4766 Korea Telecom	`5.42ms` from Seoul, KR
221.166.37.157	AS4766 Korea Telecom	`2.03ms` from Seoul, KR
221.166.115.56	AS4766 Korea Telecom	`5.33ms` from Seoul, KR
221.166.69.254	AS4766 Korea Telecom	`1.65ms` from Seoul, KR
221.166.40.118	AS4766 Korea Telecom	`1.75ms` from Seoul, KR
221.166.154.116	AS4766 Korea Telecom	`4.86ms` from Seoul, KR
221.166.163.17	AS4766 Korea Telecom	`4.90ms` from Seoul, KR
221.166.202.156	AS4766 Korea Telecom	`7.90ms` from Seoul, KR
221.166.144.133	AS4766 Korea Telecom	`4.61ms` from Seoul, KR
221.166.216.110	AS4766 Korea Telecom	`4.90ms` from Seoul, KR
221.166.213.81	AS4766 Korea Telecom	`5.15ms` from Seoul, KR
221.166.107.114	AS4766 Korea Telecom	`1.64ms` from Seoul, KR
221.166.85.254	AS4766 Korea Telecom	`1.32ms` from Seoul, KR
221.166.81.65	AS4766 Korea Telecom	`1.53ms` from Seoul, KR
221.166.96.6	AS4766 Korea Telecom	`2.01ms` from Seoul, KR
221.166.131.77	AS4766 Korea Telecom	`4.72ms` from Seoul, KR

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
5.25.101.173	AS16135 Turkcell A.S.	`17.88ms` from Ankara, TR
96.110.229.189	AS7922 Comcast Cable Communications, LLC	`0.43ms` from Ashburn, US
13.82.88.221	AS8075 Microsoft Corporation	`0.41ms` from Ashburn, US
203.151.116.29	AS4618 Internet Thailand Company Limited	`1.12ms` from Bangkok, TH
160.176.45.93	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`9.55ms` from Casablanca, MA
47.109.109.29	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.10ms` from Chengdu, CN
216.68.177.93	AS6181 Cincinnati Bell Telephone Company LLC	`0.84ms` from Cincinnati, US
194.157.5.173	AS719 Elisa Oyj	`0.64ms` from Helsinki, FI
216.132.82.109	AS9304 HGC Global Communications Limited	`2.27ms` from Hong Kong, HK
41.0.252.141	AS36994 Vodacom	`6.83ms` from Johannesburg, ZA
172.167.136.29	AS8075 Microsoft Corporation	`0.21ms` from London, GB
192.100.200.237	AS278 Universidad Nacional Autonoma de Mexico	`0.61ms` from Mexico City, MX
151.66.138.189	AS1267 WIND TRE S.P.A.	`2.75ms` from Milan, IT
193.206.67.253	AS137 Consortium GARR	`2.48ms` from Milan, IT
204.235.146.109	AS22192 Pennsylvania State System of Higher Education	`3.67ms` from New York City, US
72.238.13.61	AS33363 Charter Communications, Inc	`6.10ms` from Orlando, US
64.90.40.205	AS26347 New Dream Network, LLC	`0.28ms` from Portland, US
39.89.142.29	AS4837 CHINA UNICOM China169 Backbone	`1.63ms` from Qingdao, CN
47.251.85.61	AS45102 Alibaba (US) Technology Co., Ltd.	`0.41ms` from Santa Clara, US
122.17.179.221	AS4713 NTT DOCOMO BUSINESS,Inc.	`1.33ms` from Tokyo, JP
172.98.26.173	AS399668 e-planning	`0.23ms` from Ashburn, US
128.160.121.125	AS668 United States Department of Defense (DoD)	`0.60ms` from Atlanta, US
180.184.207.13	AS137718 Beijing Volcano Engine Technology Co., Ltd.	`3.03ms` from Guangzhou, CN
120.193.219.77	AS9808 China Mobile Communications Group Co., Ltd.	`8.61ms` from Hohhot, CN
70.167.42.125	AS22773 Cox Communications Inc.	`4.07ms` from Kansas City, US

Traceroute

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

traceroute -a -n -q1 -m6 221.161.42.153

traceroute to 221.161.42.153 (221.161.42.153): 6 hops max, 52 byte packets

1 [AS15169] 74.125.251.95 217.262 ms

2 *

3 [AS4766] 112.174.84.17 249.653 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in London, GB

On December 14th 2025

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