203.242.2.0/24

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:        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

Overlapping Ranges

BGP prefixes that contain 203.242.2.0/24

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

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

IP Address	ASN	Details
203.242.2.225	AS17841 NATIONAL INFORMATION RESOURCES SERVICE	`3.37ms` 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
69.164.231.152	AS26873 QCOL INC	`4.47ms` from Ashburn, US
221.198.211.216	AS4837 CHINA UNICOM China169 Backbone	`5.71ms` from Beijing, CN
84.59.48.40	AS3209 Vodafone GmbH	`5.87ms` from Berlin, DE
146.168.5.232	AS11776 Breezeline	`8.99ms` from Boston, US
91.178.168.24	AS5432 Proximus NV	`1.05ms` from Brussels, BE
23.61.161.216	AS16625 Akamai Technologies, Inc.	`0.93ms` from Chicago, US
178.255.113.40	AS34244 Teleservice Bredband Skane AB	`2.48ms` from Copenhagen, DK
217.236.245.8	AS3320 Deutsche Telekom AG	`3.99ms` from Frankfurt am Main, DE
182.229.172.8	AS17858 LG POWERCOMM	`2.66ms` from Incheon, KR
209.212.130.40	AS11240 AccessATC	`3.12ms` from Jacksonville, US
136.35.156.24	AS16591 Google Fiber Inc.	`0.73ms` from Kansas City, US
89.143.82.232	AS5603 Telekom Slovenije, d.d.	`3.77ms` from Ljubljana, SI
37.158.130.136	AS3352 TELEFONICA DE ESPANA S.A.U.	`16.87ms` from Madrid, ES
223.111.122.200	AS56046 China Mobile communications corporation	`3.33ms` from Nanjing, CN
37.58.183.168	AS16347 ADISTA SAS	`12.01ms` from Paris, FR
20.171.94.56	AS8075 Microsoft Corporation	`0.16ms` from Phoenix, US
140.255.168.168	AS4134 CHINANET-BACKBONE	`7.50ms` from Qingdao, CN
34.194.61.152	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
61.82.199.24	AS4766 Korea Telecom	`6.34ms` from Seoul, KR
16.16.199.120	AS16509 Amazon.com, Inc.	`0.97ms` from Stockholm, SE
125.7.56.8	AS17477 Macquarie Technology Operations Pty Limited	`0.57ms` from Sydney, AU
81.207.213.120	AS1136 KPN B.V.	`2.33ms` from Amsterdam, NL
86.82.2.56	AS1136 KPN B.V.	`1.15ms` from Amsterdam, NL
68.164.25.104	AS59642 UAB Cherry Servers	`0.33ms` from Amsterdam, NL
173.226.139.8	AS53780 APPRIVER LLC	`0.81ms` from Atlanta, US

Traceroute

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

traceroute -a -n -q1 -f5 203.242.2.1

traceroute to 203.242.2.1 (203.242.2.1): 64 hops max, 52 byte packets

5 [] 201.16.2.155 101.123 ms

6 [] 80.81.193.16 185.179 ms

7 *

8 *

9 *

10 [AS3786] 203.233.86.226 350.613 ms

11 *

12 *

13 *

14 [AS17841] 203.238.168.166 358.212 ms

15 [AS17841] 203.242.2.1 357.861 ms

Measurement taken from

IPinfo ProbeNet in Joao Pessoa, BR

On January 19th 2026

What are IP address ranges?

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