203.237.128.0/17

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kren.kr
ASN	AS4766
Registry	APNIC
ID	KREN

WHOIS Details

inetnum:        203.237.128.0 - 203.237.255.255
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:  2017-02-02T04:55:27Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Jeollanam-do Naju-si Jinheung-gil
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:  2021-06-15T06:21:49Z
source:         APNIC

person:         IP Manager
address:        Seoul Gwanak-gu Gwanak-ro
country:        KR
phone:          +82-2-882-5363
e-mail:         kindman@kren.kr
nic-hdl:        IM70-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2024-07-09T23:56:03Z
source:         APNIC

inetnum:        203.237.128.0 - 203.237.255.255
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
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.
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Seoul Gwanak-gu Gwanak-ro
address:        1
country:        KR
phone:          +82-2-882-5363
e-mail:         kindman@kren.kr
nic-hdl:        IA142-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Seoul Gwanak-gu Gwanak-ro
address:        1
country:        KR
phone:          +82-2-882-5363
e-mail:         kindman@kren.kr
nic-hdl:        IM142-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

Nearby Ranges

BGP prefixes that overlap with 203.237.0.0/16

Range	ASN	Company	Num of IPs
203.237.96.0/19	AS9754	Korean Education Network	8,192
203.237.64.0/19	AS9778	KISTI	8,192

Hosted domains

There are 27 domain names hosted across 22 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.237.167.3	dytc.ac.kr	1
203.237.159.62	djumccs.or.kr	1
203.237.194.180	icn.re.kr	1
203.237.159.63	djumcss.or.kr	1
203.237.159.61	djumcds.or.kr	1

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

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

IP Address	ASN	Details
203.237.254.94	AS38694 CHEONGJU NATIONAL UNIVERSITY OF EDCATION	`3.01ms` from Seoul, KR
203.237.182.249	AS18329 Sangmyung University	`4.39ms` from Seoul, KR
203.237.177.132	AS18329 Sangmyung University	`4.52ms` from Seoul, KR
203.237.227.67	AS4766 Korea Telecom	`4.42ms` from Seoul, KR
203.237.228.155	AS4766 Korea Telecom	`4.24ms` from Seoul, KR
203.237.250.254	AS4766 Korea Telecom	`1.27ms` from Seoul, KR
203.237.198.175	AS4766 Korea Telecom	`5.27ms` from Seoul, KR
203.237.179.249	AS18329 Sangmyung University	`4.49ms` from Seoul, KR
203.237.128.87	AS23983 Daejeon University	`4.04ms` from Seoul, KR
203.237.230.107	AS4766 Korea Telecom	`4.47ms` from Seoul, KR
203.237.199.130	AS4766 Korea Telecom	`5.30ms` from Seoul, KR
203.237.251.2	AS4766 Korea Telecom	`1.54ms` from Seoul, KR
203.237.197.216	AS4766 Korea Telecom	`5.02ms` from Seoul, KR
203.237.178.250	AS18329 Sangmyung University	`4.31ms` from Seoul, KR
203.237.216.2	AS9318 SK Broadband Co Ltd	`3.14ms` from Seoul, KR
203.237.176.24	AS18329 Sangmyung University	`4.38ms` from Seoul, KR
203.237.174.233	AS18031 Sangmyung University	`2.72ms` from Seoul, KR
203.237.181.224	AS18329 Sangmyung University	`4.34ms` from Seoul, KR
203.237.183.138	AS18329 Sangmyung University	`4.55ms` from Seoul, KR
203.237.169.164	AS18031 Sangmyung University	`4.27ms` from Seoul, KR
203.237.168.38	AS18031 Sangmyung University	`1.79ms` from Seoul, KR
203.237.153.250	AS23983 Daejeon University	`3.32ms` from Seoul, KR
203.237.212.202	AS4766 Korea Telecom	`4.47ms` from Seoul, KR
203.237.195.140	AS4766 Korea Telecom	`5.08ms` from Seoul, KR
203.237.134.230	AS23983 Daejeon University	`3.66ms` 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
185.206.212.17	AS204601 Zomro B.V.	`1.17ms` from Amsterdam, NL
217.63.254.1	AS33915 Vodafone Libertel B.V.	`5.75ms` from Amsterdam, NL
94.211.169.1	AS33915 Vodafone Libertel B.V.	`4.84ms` from Amsterdam, NL
185.133.111.1	AS57112 F2X Operator B.V.	`0.14ms` from Amsterdam, NL
106.75.76.113	AS23724 IDC, China Telecommunications Corporation	`2.21ms` from Beijing, CN
177.116.1.1	AS26599 TELEFÔNICA BRASIL S.A	`1.25ms` from Belo Horizonte, BR
190.27.192.1	AS19429 ETB - Colombia	`0.44ms` from Bogota, CO
69.252.65.49	AS7922 Comcast Cable Communications, LLC	`1.60ms` from Boston, US
190.188.226.1	AS7303 Telecom Argentina S.A.	`1.38ms` from Buenos Aires, AR
190.247.122.1	AS7303 Telecom Argentina S.A.	`1.60ms` from Buenos Aires, AR
24.245.235.1	AS19016 Westman Communications Group	`19.90ms` from Chicago, US
69.129.186.1	AS4181 TDS TELECOM	`3.85ms` from Chicago, US
98.19.223.225	AS7029 Windstream Communications LLC	`14.54ms` from Chicago, US
83.95.136.1	AS3292 TDC Holding A/S	`0.86ms` from Copenhagen, DK
221.208.208.193	AS4837 CHINA UNICOM China169 Backbone	`18.15ms` from Dalian, CN
96.76.141.97	AS7922 Comcast Cable Communications, LLC	`13.89ms` from Dallas, US
96.119.149.1	AS7922 Comcast Cable Communications, LLC	`1.29ms` from Denver, US
108.138.24.225	AS16509 Amazon.com, Inc.	`0.18ms` from Frankfurt am Main, DE
109.104.146.1	AS200325 BUNNYWAY, informacijske storitve d.o.o.	`0.92ms` from Frankfurt am Main, DE
171.67.136.1	AS32 Stanford University	`1.70ms` from Fremont, US
148.230.189.33	AS22884 TOTAL PLAY TELECOMUNICACIONES SA DE CV	`0.79ms` from Guadalajara, MX
113.101.176.65	AS4134 CHINANET-BACKBONE	`7.30ms` from Guangzhou, CN
183.236.10.81	AS9808 China Mobile Communications Group Co., Ltd.	`4.04ms` from Guangzhou, CN
84.248.197.161	AS1759 Telia Finland Oyj	`1.24ms` from Helsinki, FI
110.19.120.1	AS139007 UNICOM InnerMongolia province network	`7.31ms` from Hohhot, CN

Traceroute

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

traceroute -a -n -q1 -m5 203.237.147.153

traceroute to 203.237.147.153 (203.237.147.153): 5 hops max, 52 byte packets

1 [AS25467] 46.183.185.1 0.347 ms

2 [AS34772] 164.40.248.173 0.408 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Skopje, MK

On October 30th 2025

What are IP address ranges?

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