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
203.237.64.0/19 AS9778 KISTI 8,192
203.237.96.0/19 AS9754 Korean Education Network 8,192

Hosted domains

There are 26 domain names hosted across 21 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
203.237.159.61 djumcds.or.kr 1
203.237.159.63 djumcss.or.kr 1
203.237.235.50 bnue.ac.kr 1
203.237.211.217 aps.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

Pingable IPs

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

IP Address ASN Details
203.237.227.67 AS4766 Korea Telecom 4.56ms from Seoul, KR
203.237.180.150 AS18329 Sangmyung University 4.26ms from Seoul, KR
203.237.212.202 AS4766 Korea Telecom 4.30ms from Seoul, KR
203.237.213.2 AS4766 Korea Telecom 4.38ms from Seoul, KR
203.237.195.140 AS4766 Korea Telecom 5.17ms from Seoul, KR
203.237.254.33 AS38694 CHEONGJU NATIONAL UNIVERSITY OF EDCATION 3.10ms from Seoul, KR
203.237.250.254 AS4766 Korea Telecom 1.15ms from Seoul, KR
203.237.159.26 AS4766 Korea Telecom 3.22ms from Seoul, KR
203.237.235.52 AS4766 Korea Telecom 6.42ms from Seoul, KR
203.237.247.219 AS9318 SK Broadband Co Ltd 6.84ms from Seoul, KR
203.237.174.188 AS18031 Sangmyung University 2.35ms from Seoul, KR
203.237.183.25 AS18329 Sangmyung University 4.22ms from Seoul, KR
203.237.182.249 AS18329 Sangmyung University 4.26ms from Seoul, KR
203.237.228.155 AS4766 Korea Telecom 4.36ms from Seoul, KR
203.237.193.4 AS4766 Korea Telecom 5.23ms from Seoul, KR
203.237.194.4 AS4766 Korea Telecom 4.47ms from Seoul, KR
203.237.225.4 AS4766 Korea Telecom 4.35ms from Seoul, KR
203.237.170.250 AS18031 Sangmyung University 33.66ms from Tokyo, JP
203.237.176.46 AS18329 Sangmyung University 4.42ms from Seoul, KR
203.237.197.204 AS4766 Korea Telecom 4.66ms from Seoul, KR
203.237.238.205 AS4766 Korea Telecom 6.73ms from Seoul, KR
203.237.173.65 AS18031 Sangmyung University 50.96ms from Fuzhou, CN
203.237.230.107 AS4766 Korea Telecom 3.98ms from Seoul, KR
203.237.169.97 AS18031 Sangmyung University 3.54ms from Seoul, KR
203.237.178.113 AS18329 Sangmyung University 4.33ms 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
213.126.98.33 AS33915 Vodafone Libertel B.V. 0.74ms from Amsterdam, NL
89.97.158.1 AS12874 Fastweb SpA 11.25ms from Arezzo, IT
130.25.51.129 AS30722 Vodafone Italia S.p.A. 9.49ms from Arezzo, IT
93.67.69.1 AS30722 Vodafone Italia S.p.A. 10.51ms from Arezzo, IT
32.142.244.177 AS7018 AT&T Enterprises, LLC 2.67ms from Ashburn, US
98.252.29.1 AS7922 Comcast Cable Communications, LLC 12.10ms from Ashburn, US
20.127.47.241 AS8075 Microsoft Corporation 0.47ms from Ashburn, US
181.92.251.1 AS7303 Telecom Argentina S.A. 2.26ms from Asuncion, PY
209.215.200.81 AS7018 AT&T Enterprises, LLC 6.43ms from Atlanta, US
62.234.104.225 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.78ms from Beijing, CN
191.108.13.193 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 3.55ms from Bogota, CO
73.4.42.1 AS7922 Comcast Cable Communications, LLC 7.42ms from Boston, US
31.22.250.177 AS42863 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 16.55ms from Braga, PT
201.2.71.1 AS8167 V tal 3.62ms from Brasilia, BR
185.153.69.33 AS16326 SmalS vzw 1.64ms from Brussels, BE
84.117.218.1 AS12302 Vodafone Romania S.A. 2.44ms from Bucharest, RO
76.16.127.161 AS7922 Comcast Cable Communications, LLC 3.64ms from Chicago, US
122.140.212.1 AS4837 CHINA UNICOM China169 Backbone 15.98ms from Dalian, CN
47.24.108.1 AS20115 Charter Communications LLC 4.44ms from Dallas, US
98.172.40.65 AS22773 Cox Communications Inc. 12.55ms from Dallas, US
165.73.253.129 AS40676 Psychz Networks 0.42ms from Dallas, US
96.31.177.1 AS13765 Nedelco Inc. 9.49ms from Denver, US
198.89.32.1 AS7018 AT&T Enterprises, LLC 1.57ms from Durham, US
37.201.156.1 AS3209 Vodafone GmbH 6.27ms from Frankfurt am Main, DE
115.204.80.1 AS4134 CHINANET-BACKBONE 8.20ms from Hangzhou, CN

Traceroute

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

$
traceroute -a -n -q1 -f4 203.237.182.243
traceroute to 203.237.182.243 (203.237.182.243): 64 hops max, 52 byte packets
4 [AS3491] 63.223.16.82 51.477 ms
5 [AS3491] 63.218.147.2 78.922 ms
6 [AS4766] 112.174.91.237 82.446 ms
7 [AS4766] 112.174.8.121 79.551 ms
10 [AS18329] 211.229.181.2 85.043 ms
11 *
12 [AS18329] 203.237.182.243 88.334 ms
Measurement taken from IPinfo ProbeNet in Hong Kong, HK
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.

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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