221.144.152.0/24

AS55622 · CNUE

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Summary

Country	South Korea
Domain	kt.com
ASN	AS55622
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        221.144.0.0 - 221.168.255.255
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
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:        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

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
194.116.190.136	AS44477 PQ HOSTING PLUS S.R.L.	`0.63ms` from Amsterdam, NL
23.53.83.232	AS45758 Triple T Broadband Public Company Limited	`0.75ms` from Bangkok, TH
112.126.98.40	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.91ms` from Beijing, CN
34.9.217.136	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
98.138.233.72	AS36646 Oath Holdings Inc.	`10.96ms` from Denver, US
87.189.221.184	AS3320 Deutsche Telekom AG	`4.36ms` from Duesseldorf, DE
93.212.180.56	AS3320 Deutsche Telekom AG	`7.66ms` from Frankfurt am Main, DE
116.99.217.184	AS24086 Viettel Corporation	`13.04ms` from Ho Chi Minh City, VN
119.117.17.88	AS4837 CHINA UNICOM China169 Backbone	`4.74ms` from Liaoyang, CN
150.214.92.200	AS198096 Junta de Andalucia	`10.82ms` from Lisbon, PT
194.185.104.168	AS3313 BT Italia S.p.A.	`1.55ms` from Milan, IT
24.184.230.168	AS6128 Cablevision Systems Corp.	`5.74ms` from Newark, US
44.217.47.8	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
177.145.3.136	AS18881 TELEFÔNICA BRASIL S.A	`12.42ms` from Sao Paulo, BR
61.110.162.248	AS17583 Keumgang Cable Network	`5.08ms` from Seoul, KR
115.45.202.184	AS17962 ShenZhen Topway Video Communication Co. Ltd	`4.22ms` from Shenzhen, CN
123.195.131.232	AS38841 kbro CO. Ltd.	`8.82ms` from Taipei, TW
23.215.57.56	AS16625 Akamai Technologies, Inc.	`0.23ms` from Atlanta, US
192.80.205.24	AS19331 Twin Lakes Telephone Cooperative Corporation	`11.69ms` from Atlanta, US
58.137.249.152	AS4750 CS LOXINFO PUBLIC COMPANY LIMITED	`0.62ms` from Bangkok, TH
179.124.205.248	AS52817 NEWCENTER TELECOM	`16.53ms` from Curitiba, BR
18.197.79.152	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
162.19.65.40	AS16276 OVH SAS	`0.10ms` from Gravelines, FR
181.79.224.72	AS27932 Redes y Telecomunicaciones	`6.68ms` from Guatemala City, GT
150.143.104.184	AS6871 Plusnet	`7.98ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f3 -m7 221.144.152.254

traceroute to 221.144.152.254 (221.144.152.254): 7 hops max, 52 byte packets

3 [AS12874] 62.101.83.70 7.827 ms

4 [AS12874] 62.101.124.1 17.205 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Rende, IT

On August 28th 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.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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