203.237.231.0/24

AS4766  ·  Korea Telecom

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Summary

Country South Korea
Domain kren.kr
ASN AS4766
Parent Range 203.237.128.0/17
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:        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:        203.237.128.0 - 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
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 203.237.231.0/24

Range ASN Company Num of IPs
203.237.128.0/17 AS17614 Korean Education Network 32,768
203.237.128.0/17 AS4766 Korean Education Network 32,768
203.237.128.0/17 AS18026 Korean Education Network 32,768
203.237.128.0/17 AS23983 Korean Education Network 32,768
203.237.128.0/17 AS18031 Korean Education Network 32,768
203.237.128.0/17 AS3786 Korean Education Network 32,768
203.237.128.0/17 AS38694 Korean Education Network 32,768
203.237.128.0/17 AS9318 Korean Education Network 32,768
203.237.128.0/17 AS18319 Korean Education Network 32,768
203.237.128.0/17 AS18329 Korean Education Network 32,768

Nearby Ranges

BGP prefixes that overlap with 203.237.0.0/16

Range ASN Company Num of IPs
203.237.128.0/17 AS17614 Korean Education Network 32,768
203.237.128.0/17 AS18026 Korean Education Network 32,768
203.237.128.0/17 AS18031 Korean Education Network 32,768
203.237.128.0/17 AS18319 Korean Education Network 32,768
203.237.128.0/17 AS18329 Korean Education Network 32,768
203.237.128.0/17 AS23983 Korean Education Network 32,768
203.237.128.0/17 AS3786 Korean Education Network 32,768
203.237.128.0/17 AS38694 Korean Education Network 32,768
203.237.128.0/17 AS4766 Korean Education Network 32,768
203.237.128.0/17 AS9318 Korean Education Network 32,768
203.237.96.0/19 AS9754 Korean Education Network 8,192
203.237.64.0/19 AS9778 KISTI 8,192

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

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
188.85.151.216 AS12430 VODAFONE ESPANA S.A.U. 1.90ms from Barcelona, ES
223.177.66.104 AS24560 Bharti Airtel Ltd., Telemedia Services 9.78ms from Delhi, IN
79.254.155.152 AS3320 Deutsche Telekom AG 12.97ms from Frankfurt am Main, DE
183.130.218.24 AS4134 CHINANET-BACKBONE 11.06ms from Hangzhou, CN
121.203.152.184 AS17924 SmarTone Mobile Communications Ltd 13.46ms from Hong Kong, HK
37.135.162.216 AS12479 Orange Espagne SA 8.09ms from Madrid, ES
217.151.16.136 AS31643 Gorodskaya elektronnaya svyaz Ltd 8.17ms from Novosibirsk, RU
180.197.64.184 AS18126 Chubu Telecommunications Company, Inc. 6.39ms from Osaka, JP
89.24.120.232 AS13036 T-Mobile Czech Republic a.s. 3.96ms from Prague, CZ
177.43.120.40 AS18881 TELEFÔNICA BRASIL S.A 6.83ms from Rio de Janeiro, BR
118.173.182.232 AS23969 TOT Public Company Limited 8.60ms from Bangkok, TH
88.151.98.8 AS41075 ATW Internet Kft. 0.47ms from Budapest, HU
79.197.255.104 AS3320 Deutsche Telekom AG 1.91ms from Hamburg, DE
103.7.172.8 AS131369 Digital Infrastructure Center - Digital Transformation Department - Ministry of Agriculture and Environment 1.33ms from Hanoi, VN
31.202.94.8 AS34700 MAXNET TELECOM, LTD 6.50ms from Kharkiv, UA
94.45.33.168 AS34661 BREEZE NETWORK 8.18ms from Kyiv, UA
113.230.106.216 AS4837 CHINA UNICOM China169 Backbone 4.02ms from Liaoyang, CN
86.172.208.24 AS2856 British Telecommunications PLC 7.19ms from London, GB
23.242.1.104 AS20001 Charter Communications Inc 5.75ms from Los Angeles, US
79.54.183.184 AS3269 Telecom Italia S.p.A. 4.54ms from Milan, IT
118.195.175.232 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.00ms from Nanjing, CN
176.186.63.200 AS5410 Bouygues Telecom SA 2.29ms from Paris, FR
40.85.222.8 AS8075 Microsoft Corporation 0.18ms from Toronto, CA
61.184.223.152 AS4134 CHINANET-BACKBONE 8.52ms from Wuhan, CN
197.55.117.56 AS8452 TE-AS 5.86ms from Cairo, EG

Traceroute

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

$
traceroute -a -n -q1 -m9 203.237.231.185
traceroute to 203.237.231.185 (203.237.231.185): 9 hops max, 52 byte packets
1 [AS15169] 74.125.251.95 143.947 ms
2 *
3 [AS4766] 112.174.84.13 172.804 ms
4 *
5 *
6 [AS4766] 121.158.156.66 181.269 ms
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Toronto, CA
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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