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
221.144.0.0/12	AS9856	Korea Telecom	1,048,576
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
221.176.0.0/13	AS56046	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS146966	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS139080	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS132510	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS56044	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS134756	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS131325	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56042	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	AS23650	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56048	China Mobile Communications Corporation	524,288
221.224.0.0/13	AS4134	CHINANET jiangsu province network	524,288
221.176.0.0/13	AS56040	China Mobile Communications Corporation	524,288
221.184.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
221.176.0.0/13	AS9808	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS24445	China Mobile Communications Corporation	524,288
221.176.0.0/13	AS141425	China Mobile Communications Corporation	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	AS137702	CHINANET jiangsu province network	524,288
221.216.0.0/13	AS4808	China Unicom Beijing province network	524,288
221.224.0.0/13	AS4809	CHINANET jiangsu province network	524,288
221.232.0.0/14	AS58563	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
221.124.0.0/14	AS9304	HGC Global Communications Limited	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
221.130.0.0/15	AS56041	China Mobile Communications Corporation	131,072
221.130.0.0/15	AS56042	China Mobile Communications Corporation	131,072
221.170.0.0/15	AS2518	BIGLOBE Inc.	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
221.8.0.0/15	AS4837	China Unicom JILIN province network	131,072
221.204.0.0/15	AS4837	China Unicom Shanxi Province Network	131,072
221.169.0.0/16	AS4780	Digital United I	65,536
221.10.0.0/16	AS4837	China Unicom SiChuan province network	65,536
221.206.0.0/16	AS4837	China Unicom Heilongjiang Province Network	65,536
221.213.0.0/16	AS4837	China Unicom Yunnan province network	65,536
221.6.0.0/16	AS4837	China Unicom Jiangsu province network	65,536
221.6.0.0/16	AS140717	China Unicom Jiangsu province network	65,536
221.168.0.0/16	AS4766	Korea Telecom	65,536
221.116.0.0/16	AS17506	ARTERIA Networks Corporation	65,536
221.117.0.0/16	AS17506	ARTERIA Networks Corporation	65,536

Hosted domains

There are 689 domain names hosted across 315 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	danews.co.kr	78
221.161.197.34	xn--9i5b21an4cp1lxog.com	66
221.167.210.244	kintex.kr	23
221.163.201.52	udmtek-ltd.com	14
221.160.135.15	xn--vk1bu4pl6ilicc7g.store	12
221.162.94.238	hd-sign.co.kr	11
221.161.197.196	kheunsure.net	9
221.165.185.139	temu-kr.kr	9
221.165.153.136	gahbin.cn	8
221.162.37.119	park119.com	8
221.161.136.17	busancancercenter.or.kr	7
221.161.197.197	rhs.or.kr	7
221.167.250.54	xn--p39aa231kba.com	7
221.164.14.38	boxbee.net	6
221.161.97.170	xn--9t4bi0fwvo.kr	6
221.163.60.144	yuratech.co.kr	6
221.164.83.57	sejinintc.com	6
221.161.197.185	hanirang.co.kr	6
221.167.230.72	namichoon.com	5
221.165.47.123	yongings.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

293,880 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
221.161.1.62	AS4766 Korea Telecom	`6.40ms` from Seoul, KR
221.160.211.200	AS4766 Korea Telecom	`4.26ms` from Seoul, KR
221.161.7.66	AS4766 Korea Telecom	`7.24ms` from Seoul, KR
221.160.236.207	AS4766 Korea Telecom	`4.54ms` from Seoul, KR
221.160.230.122	AS4766 Korea Telecom	`4.95ms` from Seoul, KR
221.160.209.1	AS4766 Korea Telecom	`4.50ms` from Seoul, KR
221.161.51.254	AS4766 Korea Telecom	`7.51ms` from Seoul, KR
221.161.30.129	AS4766 Korea Telecom	`8.39ms` from Seoul, KR
221.160.165.193	AS4766 Korea Telecom	`3.61ms` from Seoul, KR
221.160.184.91	AS4766 Korea Telecom	`2.96ms` from Seoul, KR
221.161.28.1	AS4766 Korea Telecom	`8.78ms` from Seoul, KR
221.161.24.91	AS4766 Korea Telecom	`8.89ms` from Seoul, KR
221.160.227.34	AS4766 Korea Telecom	`4.03ms` from Seoul, KR
221.160.159.241	AS4766 Korea Telecom	`3.03ms` from Seoul, KR
221.160.161.33	AS4766 Korea Telecom	`3.15ms` from Seoul, KR
221.160.166.1	AS4766 Korea Telecom	`4.28ms` from Seoul, KR
221.160.253.89	AS4766 Korea Telecom	`4.12ms` from Seoul, KR
221.161.29.169	AS4766 Korea Telecom	`8.07ms` from Seoul, KR
221.160.225.188	AS4766 Korea Telecom	`3.21ms` from Seoul, KR
221.160.180.95	AS4766 Korea Telecom	`2.96ms` from Seoul, KR
221.160.199.9	AS4766 Korea Telecom	`4.48ms` from Seoul, KR
221.160.164.94	AS4766 Korea Telecom	`3.08ms` from Seoul, KR
221.160.223.157	AS4766 Korea Telecom	`3.35ms` from Seoul, KR
221.160.155.124	AS4766 Korea Telecom	`3.07ms` from Seoul, KR
221.160.168.2	AS4766 Korea Telecom	`3.55ms` 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
96.241.248.109	AS701 Verizon Business	`2.13ms` from Ashburn, US
38.19.238.189	AS174 Cogent Communications, LLC	`5.62ms` from Bogota, CO
4.28.64.253	AS3356 Level 3 Parent, LLC	`0.66ms` from Chicago, US
76.157.206.205	AS7922 Comcast Cable Communications, LLC	`7.31ms` from Chicago, US
24.95.44.141	AS10796 Charter Communications Inc	`14.26ms` from Columbus, US
207.179.100.253	AS14103 ACD.net	`3.49ms` from Detroit, US
88.210.11.125	AS216071 SERVERS TECH FZCO	`0.20ms` from Dronten, NL
185.141.97.141	AS42343 Karjaan Puhelin Oy	`2.24ms` from Helsinki, FI
154.220.44.61	AS132839 POWER LINE DATACENTER	`1.07ms` from Hong Kong, HK
113.254.230.77	AS9304 HGC Global Communications Limited	`1.59ms` from Hong Kong, HK
175.149.89.61	AS4837 CHINA UNICOM China169 Backbone	`4.17ms` from Liaoyang, CN
86.165.181.157	AS2856 British Telecommunications PLC	`4.09ms` from London, GB
86.2.73.173	AS5089 Virgin Media Limited	`12.06ms` from London, GB
77.44.44.29	AS5413 Wavenet Limited	`2.97ms` from London, GB
80.28.188.93	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.22ms` from Madrid, ES
142.120.240.77	AS577 Bell Canada	`1.30ms` from Montreal, CA
45.40.56.13	AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED	`1.66ms` from Mumbai, IN
71.236.45.157	AS7922 Comcast Cable Communications, LLC	`8.19ms` from Murfreesboro, US
189.15.209.141	AS53006 ALGAR TELECOM S/A	`4.72ms` from Osasco, BR
186.219.218.141	AS61588 DIGITAL PROVEDOR DE ACESSO A INTERNET LTDA	`15.40ms` from Osasco, BR
34.226.250.29	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
87.110.170.237	AS12578 SIA Tet	`0.64ms` from Riga, LV
20.151.196.77	AS8075 Microsoft Corporation	`0.17ms` from Toronto, CA
124.115.74.141	AS4134 CHINANET-BACKBONE	`6.41ms` from Xi'an, CN
5.167.234.13	AS51604 JSC "ER-Telecom Holding"	`12.65ms` from Yekaterinburg, RU

Traceroute

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

traceroute -a -n -q1 221.162.222.201

traceroute to 221.162.222.201 (221.162.222.201): 64 hops max, 52 byte packets

1 [AS15169] 172.253.64.138 0.855 ms

2 *

3 *

4 *

5 *

6 [AS4766] 112.174.179.166 8.758 ms

7 [AS4766] 221.162.222.201 8.903 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On November 28th 2025

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