203.237.113.0/24

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 203.237.113.0/24

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

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

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
84.244.151.248	AS20495 We Dare B.V.	`0.38ms` from Amsterdam, NL
52.92.5.8	AS16509 Amazon.com, Inc.	`0.41ms` from Dublin, IE
141.82.212.152	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`13.37ms` from Frankfurt am Main, DE
115.73.241.168	AS7552 Viettel Group	`4.18ms` from Ho Chi Minh City, VN
95.60.149.8	AS12430 VODAFONE ESPANA S.A.U.	`7.87ms` from Madrid, ES
151.71.207.168	AS1267 WIND TRE S.P.A.	`7.28ms` from Milan, IT
44.196.169.8	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
65.66.161.200	AS7018 AT&T Enterprises, LLC	`5.82ms` from San Antonio, US
14.36.177.200	AS4766 Korea Telecom	`1.25ms` from Seoul, KR
175.164.98.40	AS4837 CHINA UNICOM China169 Backbone	`2.21ms` from Tieling, CN
203.190.231.8	AS5580 GTT Communications Netherlands B.V.	`0.40ms` from Tokyo, JP
136.47.251.8	AS16591 Google Fiber Inc.	`6.86ms` from Ashburn, US
100.22.165.200	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
34.76.233.104	AS396982 Google LLC	`0.14ms` from Brussels, BE
78.182.21.56	AS9121 Turk Telekomunikasyon Anonim Sirketi	`7.96ms` from Bursa, TR
72.198.78.184	AS22773 Cox Communications Inc.	`8.14ms` from Dallas, US
174.143.111.184	AS33070 Rackspace Hosting	`1.07ms` from Dallas, US
34.244.233.56	AS16509 Amazon.com, Inc.	`0.60ms` from Dublin, IE
52.29.0.56	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
116.25.118.168	AS4134 CHINANET-BACKBONE	`2.65ms` from Guangzhou, CN
60.11.46.200	AS4837 CHINA UNICOM China169 Backbone	`6.88ms` from Harbin, CN
172.248.163.24	AS20001 Charter Communications Inc	`7.37ms` from Los Angeles, US
66.250.217.24	AS174 Cogent Communications, LLC	`0.22ms` from Miami, US
216.153.117.216	AS2527 Sony Network Communications Inc.	`1.82ms` from Osaka, JP
118.17.157.40	AS4713 NTT DOCOMO BUSINESS,Inc.	`6.84ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 -f3 -m6 203.237.113.214

traceroute to 203.237.113.214 (203.237.113.214): 6 hops max, 52 byte packets

3 [AS749] 11.53.213.138 2.679 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in London, GB

On January 18th 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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