203.242.4.0/24

AS17841 · NATIONAL INFORMATION RESOURCES SERVICE

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Summary

Country	South Korea
Domain	kt.com
ASN	AS17841
Parent Range	203.242.0.0/19
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        203.242.0.0 - 203.242.31.255
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:        [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

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

Overlapping Ranges

BGP prefixes that contain 203.242.4.0/24

Range	ASN	Company	Num of IPs
203.242.0.0/19	AS4766	Korea Telecom	8,192
203.242.0.0/19	AS45400	Korea Telecom	8,192
203.242.0.0/19	AS17841	Korea Telecom	8,192

Nearby Ranges

BGP prefixes that overlap with 203.242.0.0/16

Range	ASN	Company	Num of IPs
203.242.0.0/19	AS4766	Korea Telecom	8,192
203.242.0.0/19	AS17841	Korea Telecom	8,192
203.242.0.0/19	AS45400	Korea Telecom	8,192
203.242.32.0/20	AS10189	Hyundai Movex	4,096
203.242.80.0/20	AS10049	SK Co.,	4,096
203.242.48.0/21	AS10189	Hyundai Movex	2,048
203.242.56.0/22	AS10189	Hyundai Movex	1,024
203.242.60.0/23	AS10189	Hyundai Movex	512
203.242.207.0/24	AS7557	KTNETDRDAEJEONBACKBONE	256
203.242.62.0/24	AS10189	Hyundai Movex	256
203.242.202.0/24	AS7557	KTNETDRSERVICENETWORK	256

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

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

IP Address	ASN	Details
203.242.4.177	AS17841 NATIONAL INFORMATION RESOURCES SERVICE	`3.46ms` 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
99.3.135.56	AS7018 AT&T Enterprises, LLC	`18.30ms` from Ashburn, US
107.191.102.8	AS3842 InMotion Hosting, Inc.	`0.25ms` from Atlanta, US
68.38.17.200	AS7922 Comcast Cable Communications, LLC	`16.43ms` from Chicago, US
98.30.165.120	AS10796 Charter Communications Inc	`10.04ms` from Columbus, US
87.39.46.136	AS1213 ASIERA TECHNOLOGY SERVICES CLG	`6.62ms` from Dublin, IE
59.58.190.136	AS4134 CHINANET-BACKBONE	`4.62ms` from Fuzhou, CN
194.75.119.40	AS2856 British Telecommunications PLC	`0.85ms` from London, GB
198.58.139.168	AS1403 EBOX	`1.42ms` from Montreal, CA
27.199.152.200	AS4837 CHINA UNICOM China169 Backbone	`7.11ms` from Qingdao, CN
100.27.56.200	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
54.157.143.184	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
220.194.172.72	AS4837 CHINA UNICOM China169 Backbone	`2.09ms` from Taiyuan, CN
115.63.144.136	AS4837 CHINA UNICOM China169 Backbone	`4.29ms` from Zhengzhou, CN
161.129.37.216	AS213122 Hyonix	`0.23ms` from Ashburn, US
75.143.245.40	AS20115 Charter Communications LLC	`10.58ms` from Atlanta, US
116.105.28.104	AS24086 Viettel Corporation	`9.64ms` from Ho Chi Minh City, VN
112.133.82.136	AS9946 KCTV JEJU BROADCASTING	`9.19ms` from Incheon, KR
172.166.138.152	AS8075 Microsoft Corporation	`0.16ms` from London, GB
198.245.2.8	AS963 N963 PTE. LTD.	`0.27ms` from Los Angeles, US
79.144.110.200	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.07ms` from Madrid, ES
176.191.110.56	AS5410 Bouygues Telecom SA	`7.78ms` from Marseille, FR
151.55.123.24	AS1267 WIND TRE S.P.A.	`12.27ms` from Milan, IT
67.113.142.216	AS7018 AT&T Enterprises, LLC	`2.60ms` from San Jose, US
84.218.10.56	AS8434 Telenor Sverige AB	`1.01ms` from Stockholm, SE
40.73.128.72	AS58593 Shanghai Blue Cloud Technology Co.,Ltd	`3.92ms` from Tianjin, CN

Traceroute

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

traceroute -a -n -q1 203.242.4.226

traceroute to 203.242.4.226 (203.242.4.226): 64 hops max, 52 byte packets

1 [AS15169] 142.251.49.8 157.296 ms

2 *

3 *

4 *

5 *

6 [AS9318] 39.120.253.82 267.782 ms

7 *

8 *

9 *

10 [AS17841] 203.238.168.186 267.292 ms

11 [] 211.255.111.73 268.299 ms

12 [AS17841] 203.242.4.226 289.723 ms

Measurement taken from

IPinfo ProbeNet in Milan, IT

On January 9th 2026

What are IP address ranges?

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