203.237.108.0/24

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:         [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:        57 Daehak-ro, Jongno-gu, Seoul
country:        KR
phone:          +82-2-882-5363
e-mail:         [email protected]
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:        [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:        57 Daehak-ro, Jongno-gu, Seoul
address:        1
country:        KR
phone:          +82-2-882-5363
e-mail:         [email protected]
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:         [email protected]
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 203.237.108.0/24

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	AS23983	Korean Education Network	32,768
203.237.128.0/17	AS4766	Korean Education Network	32,768
203.237.128.0/17	AS3786	Korean Education Network	32,768
203.237.64.0/19	AS9778	KISTI	8,192
203.237.32.0/19	AS18297	Gwangju Institute of Science and Technology	8,192
203.237.0.0/19	AS10166	Korea Water Resources Corporation	8,192
203.237.96.0/19	AS9754	Korean Education Network	8,192
203.237.202.0/23	AS18026	CHEJU NATIONAL UNIVERSITY	512
203.237.175.0/24	AS18031	SANGMYUNG UNIVERSITY	256
203.237.160.0/24	AS3786	Dongyang Technical College	256
203.237.161.0/24	AS3786	Dongyang Technical College	256
203.237.162.0/24	AS3786	Dongyang Technical College	256
203.237.163.0/24	AS3786	Dongyang Technical College	256
203.237.164.0/24	AS3786	Dongyang Technical College	256
203.237.165.0/24	AS3786	Dongyang Technical College	256
203.237.166.0/24	AS3786	Dongyang Technical College	256
203.237.167.0/24	AS3786	Dongyang Technical College	256
203.237.172.0/24	AS3786	SANGMYUNG UNIVERSITY	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
203.237.154.0/24	AS4766	DAEJEON UNIVERSITY	256
203.237.156.0/24	AS4766	DAEJEON UNIVERSITY	256
203.237.157.0/24	AS4766	DAEJEON UNIVERSITY	256
203.237.158.0/24	AS4766	DAEJEON UNIVERSITY	256
203.237.159.0/24	AS4766	DAEJEON UNIVERSITY	256
203.237.191.0/24	AS4766	daekuUniversity of Education	256
203.237.204.0/24	AS4766	useokUniversity	256
203.237.205.0/24	AS4766	useokUniversity	256
203.237.206.0/24	AS4766	useokUniversity	256
203.237.207.0/24	AS4766	useokUniversity	256
203.237.208.0/24	AS4766	useokUniversity	256
203.237.209.0/24	AS4766	useokUniversity	256
203.237.210.0/24	AS4766	useokUniversity	256
203.237.211.0/24	AS4766	useokUniversity	256
203.237.212.0/24	AS4766	useokUniversity	256
203.237.213.0/24	AS4766	useokUniversity	256
203.237.214.0/24	AS4766	useokUniversity	256
203.237.215.0/24	AS4766	useokUniversity	256
203.237.224.0/24	AS4766	DANKOOK UNIVERSITY	256
203.237.225.0/24	AS4766	HALLYM COLLEGE	256
203.237.231.0/24	AS4766	HALLYM COLLEGE	256
203.237.250.0/24	AS4766	Chungang University	256
203.237.190.0/24	AS9318	Shinhan University	256
203.237.216.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.217.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.218.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.220.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.221.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.222.0/24	AS9318	DANKOOK UNIVERSITY	256
203.237.223.0/24	AS9318	DANKOOK UNIVERSITY	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
103.198.137.104	AS134732 Dot Internet	`0.67ms` from Dhaka, BD
87.237.213.200	AS61207 Hostek AB	`2.33ms` from Falkenberg, SE
124.244.230.104	AS9269 Hong Kong Broadband Network Ltd.	`1.09ms` from Hong Kong, HK
64.180.219.184	AS852 TELUS Communications Inc.	`2.88ms` from Kelowna, CA
80.40.179.8	AS13285 TalkTalk Communications Limited	`3.80ms` from London, GB
90.193.143.56	AS5607 Sky UK Limited	`3.73ms` from London, GB
83.213.25.56	AS12338 Euskaltel S.A.	`15.06ms` from Madrid, ES
5.40.27.120	AS6739 VODAFONE ONO, S.A.	`9.73ms` from Madrid, ES
76.137.30.24	AS7922 Comcast Cable Communications, LLC	`4.99ms` from Miami, US
15.160.119.88	AS16509 Amazon.com, Inc.	`0.11ms` from Milan, IT
83.246.249.24	AS31364 Joint Stock Company TransTeleCom	`3.85ms` from Novosibirsk, RU
170.231.35.56	AS264513 R H M NET LTDA - ME	`10.13ms` from Rio de Janeiro, BR
195.223.50.104	AS3269 Telecom Italia S.p.A.	`9.41ms` from Rome, IT
139.219.191.248	AS58593 Shanghai Blue Cloud Technology Co.,Ltd	`1.70ms` from Shanghai, CN
43.153.223.168	AS132203 Tencent Building, Kejizhongyi Avenue	`0.69ms` from Singapore, SG
219.86.149.8	AS9924 Taiwan Fixed Network, Telco and Network Service Provider.	`1.33ms` from Taipei, TW
129.132.89.152	AS559 SWITCH	`0.49ms` from Zuerich, CH
41.40.28.88	AS8452 TE-AS	`6.71ms` from Cairo, EG
72.128.103.24	AS10796 Charter Communications Inc	`5.49ms` from Chicago, US
1.189.4.8	AS4837 CHINA UNICOM China169 Backbone	`3.28ms` from Harbin, CN
79.105.12.136	AS12389 PJSC Rostelecom	`10.20ms` from Khabarovsk, RU
117.194.63.168	AS9829 National Internet Backbone	`4.19ms` from Kolkata, IN
175.168.6.168	AS4837 CHINA UNICOM China169 Backbone	`15.86ms` from Liaoyang, CN
213.56.185.168	AS3215 Orange S.A.	`1.91ms` from Lyon, FR
113.194.20.40	AS4837 CHINA UNICOM China169 Backbone	`8.25ms` from Nanchang, CN

Traceroute

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

traceroute -a -n -q1 -f3 -m8 203.237.108.253

traceroute to 203.237.108.253 (203.237.108.253): 8 hops max, 52 byte packets

3 [] 193.239.117.168 25.068 ms

4 *

5 [AS3786] 1.208.167.37 245.559 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Copenhagen, DK

On December 14th 2025

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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