203.230.128.0/17

AS4766 · Korea Telecom

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Summary

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

WHOIS Details

inetnum:        203.230.192.0 - 203.230.255.255
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:  2017-02-02T04:55:24Z
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:        203.230.192.0 - 203.230.255.255
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

Overlapping Ranges

BGP prefixes that are contained by 203.230.128.0/17

Range	ASN	Company	Num of IPs
203.230.160.0/19	AS45377	Korea Telecom	8,192

Nearby Ranges

BGP prefixes that overlap with 203.230.0.0/16

Range	ASN	Company	Num of IPs
203.230.160.0/19	AS45377	Korea Telecom	8,192
203.230.80.0/20	AS4766	Korean Education Network	4,096

Hosted domains

There are 22 domain names hosted across 9 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.230.220.13	xn--939a100ac9mn8i.kr	10
203.230.220.63	chunghyunfoundation.org	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

2,011 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.230.142.14	AS9523 Mokwon University	`5.44ms` from Seoul, KR
203.230.150.64	AS9523 Mokwon University	`5.75ms` from Seoul, KR
203.230.137.45	AS9523 Mokwon University	`4.50ms` from Seoul, KR
203.230.152.124	AS10046 HOWON UNIVERSITY	`6.72ms` from Seoul, KR
203.230.135.254	AS4766 Korea Telecom	`3.67ms` from Seoul, KR
203.230.132.1	AS4766 Korea Telecom	`3.47ms` from Seoul, KR
203.230.134.126	AS4766 Korea Telecom	`7.43ms` from Seoul, KR
203.230.136.247	AS9523 Mokwon University	`6.52ms` from Seoul, KR
203.230.217.248	AS4766 Korea Telecom	`1.83ms` from Seoul, KR
203.230.222.103	AS4766 Korea Telecom	`2.35ms` from Seoul, KR
203.230.255.1	AS4766 Korea Telecom	`7.36ms` from Seoul, KR
203.230.223.48	AS4766 Korea Telecom	`2.31ms` from Seoul, KR
203.230.221.243	AS4766 Korea Telecom	`2.36ms` from Seoul, KR
203.230.192.11	AS18329 Sangmyung University	`4.54ms` from Seoul, KR
203.230.214.127	AS18028 GyeongSang National University	`7.83ms` from Seoul, KR
203.230.213.245	AS18028 GyeongSang National University	`7.90ms` from Seoul, KR
203.230.193.111	AS18329 Sangmyung University	`4.60ms` from Seoul, KR
203.230.238.225	AS9782 WooSong University	`4.19ms` from Seoul, KR
203.230.236.247	AS9782 WooSong University	`3.94ms` from Seoul, KR
203.230.200.46	AS4766 Korea Telecom	`4.28ms` from Seoul, KR
203.230.195.26	AS18329 Sangmyung University	`4.59ms` from Seoul, KR
203.230.206.145	AS4766 Korea Telecom	`1.31ms` from UEruemqi, CN
203.230.197.87	AS18329 Sangmyung University	`4.44ms` from Seoul, KR
203.230.209.9	AS10053 yeonsung University	`1.84ms` from Seoul, KR
203.230.208.199	AS10053 yeonsung University	`1.43ms` 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
62.108.22.1	AS33915 Vodafone Libertel B.V.	`4.19ms` from Amsterdam, NL
72.9.6.1	AS11776 Breezeline	`4.70ms` from Ashburn, US
70.161.134.193	AS22773 Cox Communications Inc.	`9.23ms` from Ashburn, US
64.18.115.1	AS19830 The Ringgold Telephone Company	`3.84ms` from Atlanta, US
222.129.136.1	AS4808 China Unicom Beijing Province Network	`3.49ms` from Beijing, CN
116.78.8.1	AS4837 CHINA UNICOM China169 Backbone	`5.55ms` from Beijing, CN
39.156.140.33	AS9808 China Mobile Communications Group Co., Ltd.	`2.20ms` from Beijing, CN
200.82.210.1	AS21826 Corporación Telemic C.A.	`11.30ms` from Bogota, CO
138.207.192.1	AS11776 Breezeline	`3.84ms` from Boston, US
161.38.190.129	AS22147 Open Contributors Corporation for Advanced Internet Development, Inc.	`0.44ms` from Boston, US
199.33.165.1	AS7015 Comcast Cable Communications, LLC	`1.72ms` from Boston, US
40.84.28.81	AS8075 Microsoft Corporation	`0.37ms` from Boydton, US
186.19.92.1	AS27747 Telecentro S.A.	`1.30ms` from Buenos Aires, AR
107.172.143.1	AS36352 HostPapa	`0.20ms` from Buffalo, US
118.249.160.1	AS4134 CHINANET-BACKBONE	`3.85ms` from Changsha, CN
23.1.36.193	AS9498 BHARTI Airtel Ltd.	`0.65ms` from Chennai, IN
23.28.156.1	AS12083 WideOpenWest Finance LLC	`8.37ms` from Chicago, US
192.104.116.1	AS26734 Shelby Electric Cooperative	`9.27ms` from Chicago, US
184.18.52.209	AS5650 Frontier Communications of America, Inc.	`5.22ms` from Chicago, US
74.133.41.145	AS10796 Charter Communications Inc	`17.81ms` from Columbus, US
221.134.212.81	AS9583 Sify Limited	`2.18ms` from Delhi, IN
207.86.121.129	AS2828 Verizon Business	`6.69ms` from Denver, US
70.60.170.113	AS10796 Charter Communications Inc	`7.81ms` from Flint, US
200.129.53.1	AS1916 Rede Nacional de Ensino e Pesquisa	`9.15ms` from Fortaleza, BR
167.249.146.1	AS265192 F. A. ROCHA E COMERCIO	`12.79ms` from Fortaleza, BR

Traceroute

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

traceroute -a -n -q1 203.230.197.212

traceroute to 203.230.197.212 (203.230.197.212): 64 hops max, 52 byte packets

1 [AS15169] 172.253.64.138 1.188 ms

2 *

3 *

4 [AS4766] 112.174.101.110 4.411 ms

5 [AS4766] 112.188.164.90 16.868 ms

6 [AS4766] 175.204.250.26 5.027 ms

7 [AS18329] 211.229.181.2 6.848 ms

8 *

9 [AS18329] 203.230.197.212 5.702 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On October 30th 2025

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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