203.237.102.0/24

AS9754 · CHOSUN UNIVERSITY

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Summary

Country	South Korea
Domain	kren.kr
ASN	AS9754
Parent Range	203.237.96.0/19
Registry	APNIC
ID	KREN

WHOIS Details

inetnum:        203.237.96.0 - 203.237.127.255
netname:        KREN
descr:          Korean Education Network
admin-c:        IM70-AP
tech-c:         IM70-AP
country:        KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2017-02-02T04:55:26Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-09-04T01:00:01Z
source:         APNIC

person:         IP Manager
address:        57 Daehak-ro, Jongno-gu, Seoul
country:        KR
phone:          +82-2-882-5363
e-mail:         kindman@kren.kr
nic-hdl:        IM70-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-11-17T00:10:02Z
source:         APNIC

inetnum:        203.237.96.0 - 203.237.127.255
netname:        KREN-KR
descr:          Korean Education Network
country:        KR
admin-c:        IA142-KR
tech-c:         IM142-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:        57 Daehak-ro, Jongno-gu, Seoul
address:        1
country:        KR
phone:          +82-2-882-5363
e-mail:         kindman@kren.kr
nic-hdl:        IA142-KR
mnt-by:         MNT-KRNIC-AP
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:        57 Daehak-ro, Jongno-gu, Seoul
address:        1
country:        KR
phone:          +82-2-882-5363
e-mail:         kindman@kren.kr
nic-hdl:        IM142-KR
mnt-by:         MNT-KRNIC-AP
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 203.237.102.0/24

Range	ASN	Company	Num of IPs
203.237.96.0/19	AS9754	Korean Education Network	8,192

Nearby Ranges

BGP prefixes that overlap with 203.237.0.0/16

Range	ASN	Company	Num of IPs
203.237.128.0/17	AS3786	Korean Education Network	32,768
203.237.128.0/17	AS23983	Korean Education Network	32,768
203.237.128.0/17	AS4766	Korean Education Network	32,768
203.237.32.0/19	AS18297	Gwangju Institute of Science and Technology	8,192
203.237.96.0/19	AS9754	Korean Education Network	8,192
203.237.64.0/19	AS9778	KISTI	8,192
203.237.0.0/19	AS10166	Korea Water Resources Corporation	8,192
203.237.202.0/23	AS18026	CHEJU NATIONAL UNIVERSITY	512
203.237.173.0/24	AS18031	SANGMYUNG UNIVERSITY	256
203.237.161.0/24	AS3786	Dongyang Technical College	256
203.237.164.0/24	AS3786	Dongyang Technical College	256
203.237.163.0/24	AS3786	Dongyang Technical College	256
203.237.166.0/24	AS3786	Dongyang Technical College	256
203.237.162.0/24	AS3786	Dongyang Technical College	256
203.237.167.0/24	AS3786	Dongyang Technical College	256
203.237.165.0/24	AS3786	Dongyang Technical College	256
203.237.172.0/24	AS3786	SANGMYUNG UNIVERSITY	256
203.237.160.0/24	AS3786	Dongyang Technical College	256
203.237.254.0/24	AS38694	CHEONGJU NATIONAL UNIVERSITY OF EDUCATION	256
203.237.255.0/24	AS38694	CHEONGJU NATIONAL UNIVERSITY OF EDUCATION	256
203.237.210.0/24	AS4766	useokUniversity	256
203.237.207.0/24	AS4766	useokUniversity	256
203.237.213.0/24	AS4766	useokUniversity	256
203.237.215.0/24	AS4766	useokUniversity	256
203.237.212.0/24	AS4766	useokUniversity	256
203.237.211.0/24	AS4766	useokUniversity	256
203.237.205.0/24	AS4766	useokUniversity	256
203.237.214.0/24	AS4766	useokUniversity	256
203.237.250.0/24	AS4766	Chungang University	256
203.237.158.0/24	AS4766	DAEJEON UNIVERSITY	256
203.237.157.0/24	AS4766	DAEJEON UNIVERSITY	256
203.237.156.0/24	AS4766	DAEJEON UNIVERSITY	256
203.237.191.0/24	AS4766	daekuUniversity of Education	256
203.237.209.0/24	AS4766	useokUniversity	256
203.237.206.0/24	AS4766	useokUniversity	256
203.237.159.0/24	AS4766	DAEJEON UNIVERSITY	256
203.237.204.0/24	AS4766	useokUniversity	256
203.237.225.0/24	AS4766	HALLYM COLLEGE	256
203.237.224.0/24	AS4766	DANKOOK UNIVERSITY	256
203.237.208.0/24	AS4766	useokUniversity	256
203.237.231.0/24	AS4766	HALLYM COLLEGE	256
203.237.223.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.219.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.190.0/24	AS9318	Shinhan University	256
203.237.222.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.221.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.218.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.226.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.216.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.217.0/24	AS9318	DANKOOK UNIVERSITY	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

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

IP Address	ASN	Details
203.237.102.184	AS9754 CHOSUN UNIVERSITY	`5.62ms` 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
141.161.55.184	AS11318 Georgetown University	`2.10ms` from Ashburn, US
27.131.128.200	AS24187 KIRZ Service Provider	`0.19ms` from Bangkok, TH
181.94.142.184	AS7303 Telecom Argentina S.A.	`7.36ms` from Buenos Aires, AR
178.77.87.24	AS34011 Host Europe GmbH	`3.01ms` from Frankfurt am Main, DE
47.97.104.248	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.18ms` from Hangzhou, CN
112.205.195.24	AS9299 Philippine Long Distance Telephone Company	`1.19ms` from Manila, PH
60.122.57.72	AS17676 SoftBank Corp.	`4.00ms` from Osaka, JP
3.237.114.152	AS14618 Amazon.com, Inc.	`0.47ms` from Reston, US
15.185.236.200	AS16509 Amazon.com, Inc.	`7.95ms` from Riyadh, SA
189.165.61.136	AS8151 UNINET	`6.73ms` from Santiago de Queretaro, MX
118.25.168.120	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.20ms` from Shanghai, CN
218.169.173.56	AS3462 Data Communication Business Group	`3.25ms` from Taichung, TW
220.150.98.8	AS4685 Asahi Net	`16.35ms` from Tokyo, JP
153.144.241.88	AS4713 NTT DOCOMO BUSINESS,Inc.	`8.14ms` from Tokyo, JP
95.23.117.216	AS12479 Orange Espagne SA	`5.83ms` from Zaragoza, ES
172.190.117.72	AS8075 Microsoft Corporation	`0.42ms` from Ashburn, US
73.207.235.136	AS7922 Comcast Cable Communications, LLC	`5.08ms` from Atlanta, US
194.158.71.248	AS6752 Andorra Telecom	`3.69ms` from Barcelona, ES
24.61.203.168	AS7922 Comcast Cable Communications, LLC	`10.99ms` from Boston, US
98.216.234.168	AS7922 Comcast Cable Communications, LLC	`7.53ms` from Boston, US
3.150.238.40	AS16509 Amazon.com, Inc.	`0.16ms` from Columbus, US
13.32.8.8	AS16509 Amazon.com, Inc.	`0.21ms` from Frankfurt am Main, DE
202.182.225.232	AS9536 Macroview Telecom Limited	`0.77ms` from Hong Kong, HK
61.85.8.232	AS4766 Korea Telecom	`11.15ms` from Incheon, KR
118.98.230.120	AS18051 Pustekkom	`2.73ms` from Jakarta, ID

Traceroute

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

traceroute -a -n -q1 203.237.102.145

traceroute to 203.237.102.145 (203.237.102.145): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.43 0.084 ms

2 *

3 *

4 [AS3786] 1.213.107.201 2.395 ms

5 *

6 [AS3786] 1.208.90.10 6.284 ms

7 [AS3786] 210.216.6.2 5.39 ms

8 *

9 *

10 *

11 [AS9754] 203.237.102.145 8.489 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On March 29th 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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