1. All IP Ranges
  2. 203.0.0.0/8
  3. 203.237.0.0/16
  4. AS9754  | 203.237.100.0/24

203.237.100.0/24

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 203.237.100.0/24

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

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Read more

Pingable IPs

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

IP Address ASN Details
203.237.100.18 AS9754 CHOSUN UNIVERSITY 6.32ms 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
96.241.217.40 AS701 Verizon Business 2.12ms from Ashburn, US
106.75.126.152 AS23724 IDC, China Telecommunications Corporation 2.56ms from Beijing, CN
52.227.2.88 AS8075 Microsoft Corporation 0.57ms from Boydton, US
35.209.128.152 AS15169 Google LLC 0.11ms from Council Bluffs, US
79.204.168.88 AS3320 Deutsche Telekom AG 3.97ms from Duesseldorf, DE
47.242.53.72 AS45102 Alibaba (US) Technology Co., Ltd. 0.73ms from Hong Kong, HK
212.58.6.88 AS8685 Doruk Iletisim ve Otomasyon Sanayi ve Ticaret A.S. 2.66ms from Istanbul, TR
145.241.242.56 AS31898 Oracle Corporation 0.28ms from London, GB
128.111.17.8 AS131 University of California, Santa Barbara 2.51ms from Los Angeles, US
18.210.39.72 AS14618 Amazon.com, Inc. 0.23ms from Reston, US
172.92.164.56 AS11404 Wave Broadband 3.47ms from San Jose, US
187.212.76.24 AS8151 UNINET 6.21ms from Santiago de Queretaro, MX
212.244.202.216 AS5617 Orange Polska Spolka Akcyjna 3.60ms from Warsaw, PL
8.140.38.8 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 0.10ms from Beijing, CN
84.119.29.152 AS3209 Vodafone GmbH 9.61ms from Frankfurt am Main, DE
180.87.242.40 AS136907 HUAWEI CLOUDS 0.91ms from Hong Kong, HK
206.119.106.88 AS140224 Nebula Global LLC 0.85ms from Hong Kong, HK
146.199.67.152 AS6871 Plusnet 3.83ms from London, GB
79.12.23.120 AS3269 Telecom Italia S.p.A. 2.27ms from Milan, IT
95.54.187.168 AS12389 PJSC Rostelecom 17.62ms from Saint Petersburg, RU
181.215.180.88 AS213690 AW SOLUCOES DIGITAIS LTDA 0.43ms from Sao Paulo, BR
13.61.199.56 AS16509 Amazon.com, Inc. 0.11ms from Stockholm, SE
180.149.229.136 AS136557 Host Universal Pty Ltd 0.07ms from Sydney, AU
59.128.149.8 AS2516 KDDI CORPORATION 18.89ms from Tokyo, JP
87.206.251.40 AS9141 P4 Sp. z o.o. 12.06ms from Warsaw, PL

Traceroute

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

$
traceroute -a -n -q1 -f5 203.237.100.35
traceroute to 203.237.100.35 (203.237.100.35): 64 hops max, 52 byte packets
6 *
7 *
8 [AS3786] 1.208.165.29 1.621 ms
9 *
10 [AS3786] 1.213.90.10 6.458 ms
11 [AS3786] 210.216.6.2 6.352 ms
12 [AS9754] 203.237.127.75 6.397 ms
13 *
14 *
15 [AS9754] 203.237.100.35 8.305 ms
Measurement taken from IPinfo ProbeNet in Seoul, KR
On

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.

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