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:         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:        221.160.0.0 - 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:         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 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
221.240.0.0/12	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
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.224.0.0/13	AS134770	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS139080	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS140292	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS132510	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS141425	China Mobile Communications Corporation	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	AS131325	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS4809	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS138950	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS137697	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS134756	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS9808	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS4134	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56044	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
221.176.0.0/13	AS56040	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56048	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS24445	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS23650	CHINANET jiangsu province network	524,288
221.184.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
221.216.0.0/13	AS4808	China Unicom Beijing province network	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
221.140.0.0/14	AS9318	SK Broadband Co Ltd	262,144
221.200.0.0/14	AS4837	China Unicom Liaoning Province Network	262,144
221.232.0.0/14	AS4134	CHINANET Hubei province network	262,144
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
221.204.0.0/15	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
221.138.0.0/15	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
221.129.0.0/16	AS23841	TIANJIN BROADCAST & TV NETWORK CO. LTD	65,536
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
221.116.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.168.0.0/16	AS4766	Korea Telecom	65,536
221.117.0.0/16	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
221.112.0.0/16	AS17506	ARTERIA Networks Corporation	65,536

Hosted domains

There are 691 domain names hosted across 316 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	ddsooh.com	78
221.161.197.34	badaswim.org	66
221.167.210.244	dosup.com	23
221.163.201.52	udmtek-ltd.com	14
221.160.135.15	detonex.co.kr	12
221.162.94.238	naline.kr	11
221.165.185.139	kginterior-bank.kr	9
221.161.197.196	kheunsure.kr	9
221.162.37.119	park119.net	8
221.165.153.136	gahbin.com	8
221.161.136.17	busancancercenter.or.kr	7
221.161.197.197	kheun.net	7
221.167.250.54	bokakbokak.com	7
221.164.14.38	happyzibsuri.com	6
221.164.83.57	sejinintc.com	6
221.163.60.144	yuratech.kr	6
221.161.197.185	gajisan.co.kr	6
221.161.97.170	spo1.kr	6
221.167.230.72	raraland.org	5
221.165.27.251	010car.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

295,548 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
221.167.236.254	AS4766 Korea Telecom	`1.38ms` from Seoul, KR
221.167.237.254	AS4766 Korea Telecom	`1.42ms` from Seoul, KR
221.167.217.140	AS4766 Korea Telecom	`1.22ms` from Seoul, KR
221.167.248.50	AS4766 Korea Telecom	`1.20ms` from Seoul, KR
221.167.231.212	AS4766 Korea Telecom	`1.43ms` from Seoul, KR
221.167.233.115	AS4766 Korea Telecom	`1.32ms` from Seoul, KR
221.167.249.88	AS4766 Korea Telecom	`1.15ms` from Seoul, KR
221.167.221.5	AS4766 Korea Telecom	`1.54ms` from Seoul, KR
221.167.220.254	AS4766 Korea Telecom	`1.50ms` from Seoul, KR
221.167.229.21	AS4766 Korea Telecom	`1.26ms` from Seoul, KR
221.167.245.67	AS4766 Korea Telecom	`1.17ms` from Seoul, KR
221.167.238.31	AS4766 Korea Telecom	`1.26ms` from Seoul, KR
221.167.253.95	AS4766 Korea Telecom	`1.14ms` from Seoul, KR
221.167.246.97	AS4766 Korea Telecom	`1.30ms` from Seoul, KR
221.167.243.254	AS4766 Korea Telecom	`1.27ms` from Seoul, KR
221.167.216.126	AS4766 Korea Telecom	`1.22ms` from Seoul, KR
221.167.219.200	AS4766 Korea Telecom	`1.20ms` from Seoul, KR
221.167.226.254	AS4766 Korea Telecom	`1.36ms` from Seoul, KR
221.167.213.92	AS4766 Korea Telecom	`1.44ms` from Seoul, KR
221.167.215.129	AS4766 Korea Telecom	`1.28ms` from Seoul, KR
221.167.214.43	AS4766 Korea Telecom	`1.11ms` from Seoul, KR
221.167.242.192	AS4766 Korea Telecom	`1.17ms` from Seoul, KR
221.167.227.75	AS4766 Korea Telecom	`1.26ms` from Seoul, KR
221.167.255.8	AS4766 Korea Telecom	`1.32ms` from Seoul, KR
221.167.235.190	AS4766 Korea Telecom	`1.37ms` 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
195.240.174.205	AS1136 KPN B.V.	`3.64ms` from Amsterdam, NL
113.246.207.253	AS4134 CHINANET-BACKBONE	`1.08ms` from Changsha, CN
65.73.223.253	AS7011 Frontier Communications of America, Inc.	`16.23ms` from Chicago, US
71.66.49.253	AS10796 Charter Communications Inc	`3.46ms` from Columbus, US
87.234.28.125	AS20676 Plusnet GmbH	`2.08ms` from Duesseldorf, DE
174.103.18.109	AS10796 Charter Communications Inc	`15.43ms` from Flint, US
98.42.3.61	AS7922 Comcast Cable Communications, LLC	`2.18ms` from Fremont, US
116.110.173.205	AS24086 Viettel Corporation	`13.53ms` from Ho Chi Minh City, VN
120.193.219.77	AS9808 China Mobile Communications Group Co., Ltd.	`8.63ms` from Hohhot, CN
121.122.7.189	AS9534 Binariang Berhad	`3.87ms` from Kuala Lumpur, MY
85.210.174.45	AS8075 Microsoft Corporation	`0.26ms` from London, GB
49.147.51.77	AS9299 Philippine Long Distance Telephone Company	`3.63ms` from Manila, PH
184.26.73.141	AS16625 Akamai Technologies, Inc.	`0.51ms` from Miami, US
37.112.52.173	AS57044 JSC "ER-Telecom Holding"	`8.66ms` from Moscow, RU
162.0.201.61	AS63448 HOLSTON ELECTRIC COOPERATIVE	`10.11ms` from Nashville, US
40.183.73.93	AS54004 Optimum WiFi	`4.29ms` from New York City, US
194.177.41.237	AS16347 ADISTA SAS	`0.25ms` from Paris, FR
181.88.223.157	AS7303 Telecom Argentina S.A.	`1.20ms` from Rosario, AR
216.197.161.45	AS803 Saskatchewan Telecommunications	`19.51ms` from Saskatoon, CA
75.253.229.77	AS6167 Verizon Business	`8.68ms` from Seattle, US
175.227.160.77	AS4766 Korea Telecom	`7.01ms` from Seoul, KR
2.21.194.157	AS16625 Akamai Technologies, Inc.	`0.66ms` from Stockholm, SE
191.8.148.77	AS27699 TELEFÔNICA BRASIL S.A	`7.24ms` from São Paulo, BR
221.103.217.13	AS17676 SoftBank Corp.	`2.86ms` from Tokyo, JP
157.101.228.93	AS7677 Dai Nippon Printing Co., Ltd	`1.70ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 221.165.141.190

traceroute to 221.165.141.190 (221.165.141.190): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.61 0.063 ms

2 [AS4766] 218.145.32.254 0.767 ms

3 *

4 *

5 [AS4766] 112.174.58.34 1.901 ms

6 [AS4766] 221.165.141.190 1.57 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On November 22nd 2025

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