203.254.171.0/24

AS4766 · Korea Telecom

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Summary

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

WHOIS Details

inetnum:        203.254.171.0 - 203.254.171.255
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:  2025-11-03T08:14:07Z
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:        203.254.171.0 - 203.254.171.255
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

Nearby Ranges

BGP prefixes that overlap with 203.254.0.0/16

Range	ASN	Company	Num of IPs
203.254.192.0/18	AS6619	SamsungSDS Inc.	16,384
203.254.128.0/19	AS7560	Jeonbuk National University	8,192
203.254.176.0/20	AS1237	KISTI	4,096
203.254.160.0/21	AS10070	KRISS SubDAEJONnetworks connected to backbone	2,048
203.254.172.0/23	AS4766	Korea Telecom	512
203.254.168.0/23	AS1237	KISTI	512
203.254.40.0/24	AS1237	KISTI	256
203.254.240.0/24	AS138380	VOLVO CONSTRUCTION EQUIPMENT KOREA LTD	256
203.254.170.0/24	AS17861	KISTI	256
203.254.9.0/24	AS3786	Korea Internet Security Agency	256
203.254.241.0/24	AS6619	SamsungSDS Inc.	256
203.254.51.0/24	AS9494	National Infomation Society Agency	256
203.254.179.0/24	AS1237	National Research Council for	256
203.254.180.0/24	AS1237	Science and Technology Policy Institute	256
203.254.181.0/24	AS1237	Korea Institute for International Economic Policy	256
203.254.185.0/24	AS1237	Korea Labor Institute	256
203.254.186.0/24	AS1237	Korea Institute for Health and Social Affairs	256

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.254.171.88	hanwha-ess.com	1
203.254.171.111	kaiv.or.kr	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
203.254.171.55	AS4766 Korea Telecom	`1.60ms` 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
185.36.41.40	AS1136 KPN B.V.	`3.37ms` from Amsterdam, NL
139.130.203.120	AS1221 Telstra Limited	`1.92ms` from Brisbane, AU
83.182.188.184	AS1257 Tele2 Sverige AB	`3.83ms` from Copenhagen, DK
73.177.109.248	AS7922 Comcast Cable Communications, LLC	`14.79ms` from Dallas, US
88.240.199.200	AS9121 Turk Telekomunikasyon Anonim Sirketi	`10.58ms` from Denizli, TR
18.196.155.168	AS16509 Amazon.com, Inc.	`0.13ms` from Frankfurt am Main, DE
114.120.225.248	AS23693 PT. Telekomunikasi Selular	`0.87ms` from Jakarta, ID
90.243.234.200	AS5378 Vodafone Limited	`4.83ms` from London, GB
97.228.10.72	AS6167 Verizon Business	`14.12ms` from Los Angeles, US
189.228.151.104	AS8151 UNINET	`1.60ms` from Mexico City, MX
73.205.129.120	AS7922 Comcast Cable Communications, LLC	`7.56ms` from Miami, US
212.192.125.88	AS41566 Federal State Budget Educational Institution of Higher Professional Education "Tomsk State University of Control Systems and Radio Electronics"	`4.85ms` from Novosibirsk, RU
86.219.85.72	AS3215 Orange S.A.	`7.87ms` from Paris, FR
182.47.200.88	AS4134 CHINANET-BACKBONE	`4.78ms` from Qingdao, CN
202.194.168.168	AS4538 China Education and Research Network Center	`17.75ms` from Qingdao, CN
40.124.194.24	AS8075 Microsoft Corporation	`0.26ms` from San Antonio, US
207.204.241.40	AS22781 Strong Technology, LLC.	`0.59ms` from San Jose, US
69.4.135.184	AS14051 Fidium	`5.17ms` from Santa Clara, US
206.214.53.24	AS22054 Hood Canal Communications	`4.71ms` from Seattle, US
112.161.20.184	AS4766 Korea Telecom	`1.50ms` from Seoul, KR
111.70.24.152	AS17421 Mobile Business Group	`13.00ms` from Taipei, TW
195.240.74.88	AS1136 KPN B.V.	`1.50ms` from Amsterdam, NL
91.61.79.216	AS3320 Deutsche Telekom AG	`2.90ms` from Berlin, DE
89.237.197.104	AS12997 OJSC Kyrgyztelecom	`8.29ms` from Bishkek, KG
35.205.224.8	AS396982 Google LLC	`0.15ms` from Brussels, BE

Traceroute

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

traceroute -a -n -q1 -f12 203.254.171.111

traceroute to 203.254.171.111 (203.254.171.111): 64 hops max, 52 byte packets

12 [AS4766] 203.254.171.111 27.531 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 19th 2026

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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