203.253.128.0/22

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        203.253.128.0 - 203.253.131.255
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

Nearby Ranges

BGP prefixes that overlap with 203.253.0.0/16

Range	ASN	Company	Num of IPs
203.253.192.0/19	AS18026	JEJU NATIONAL UNIVERSITY	8,192
203.253.96.0/20	AS1237	KISTI	4,096
203.253.64.0/20	AS9572	Hankuk University of Foreign Studies Computer Center	4,096
203.253.80.0/20	AS9572	Hankuk University of Foreign Studies Computer Center	4,096
203.253.32.0/20	AS4766	KONGJU NATIONAL UNIVERSITY	4,096
203.253.240.0/21	AS9637	Korea Basic Science Institute	2,048
203.253.132.0/23	AS2385	KISTI	512
203.253.134.0/24	AS2385	KISTI	256
203.253.236.0/24	AS1237	KISTI	256
203.253.232.0/24	AS17576	National Research Foundation of Korea	256
203.253.135.0/24	AS1237	KISTI	256
203.253.237.0/24	AS9275	Korea Astronomy Observatory	256

Hosted domains

There are 3 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.253.128.179	city-hub.kr	1
203.253.128.139	citydatahub.kr	1
203.253.128.152	iotocean.org	1

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
203.253.128.161	AS4766 Korea Telecom	`1.84ms` 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
13.68.187.118	AS8075 Microsoft Corporation	`0.41ms` from Ashburn, US
185.198.145.38	AS206010 Umbra Service Center Management	`3.06ms` from Hafnarfjoerdur, IS
125.116.54.246	AS4134 CHINANET-BACKBONE	`9.64ms` from Hangzhou, CN
76.142.248.230	AS7922 Comcast Cable Communications, LLC	`6.37ms` from Houston, US
175.208.210.198	AS4766 Korea Telecom	`1.24ms` from Incheon, KR
80.42.33.6	AS13285 TalkTalk Communications Limited	`1.58ms` from London, GB
216.144.126.150	AS22639 Cooptel Coop de Telecommunication	`3.26ms` from Montreal, CA
124.221.156.70	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.99ms` from Shanghai, CN
13.76.248.214	AS8075 Microsoft Corporation	`0.62ms` from Singapore, SG
5.133.218.70	AS51747 Internet Vikings International AB	`0.87ms` from Stockholm, SE
165.231.190.150	AS58065 Orion Network Limited	`0.23ms` from Tallinn, EE
60.138.44.54	AS17676 SoftBank Corp.	`3.11ms` from Tokyo, JP
165.29.105.182	AS21852 State Of Arkansas, Division of Information Systems	`10.69ms` from Dallas, US
78.175.221.22	AS9121 Turk Telekomunikasyon Anonim Sirketi	`14.82ms` from Denizli, TR
36.101.36.118	AS4134 CHINANET-BACKBONE	`3.23ms` from Haikou, CN
85.108.183.150	AS9121 Turk Telekomunikasyon Anonim Sirketi	`2.58ms` from Istanbul, TR
66.242.87.6	AS16904 Arvig Enterprises Inc.	`11.19ms` from Minneapolis, US
75.146.190.150	AS7922 Comcast Cable Communications, LLC	`5.40ms` from Minneapolis, US
67.8.119.22	AS33363 Charter Communications, Inc	`7.32ms` from Orlando, US
110.180.70.86	AS4134 CHINANET-BACKBONE	`2.46ms` from Taiyuan, CN
218.110.102.86	AS2527 Sony Network Communications Inc.	`6.71ms` from Tokyo, JP
203.255.6.182	AS18028 GyeongSang National University	`1.37ms` from UEruemqi, CN
87.199.34.86	AS41201 DOLSAT sp. z o.o.	`3.47ms` from Warsaw, PL
204.236.233.38	AS14618 Amazon.com, Inc.	`0.52ms` from Ashburn, US
13.226.91.6	AS16509 Amazon.com, Inc.	`0.54ms` from Auckland, NZ

Traceroute

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

traceroute -a -n -q1 -m7 203.253.131.189

traceroute to 203.253.131.189 (203.253.131.189): 7 hops max, 52 byte packets

1 [AS15169] 66.249.94.178 241.332 ms

2 [AS15169] 172.253.73.42 241.354 ms

3 *

4 [AS4766] 112.174.84.69 276.013 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

On March 20th 2026

What are IP address ranges?

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