203.230.135.0/24

AS4766 · Korea Telecom

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Summary

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

WHOIS Details

inetnum:        203.230.128.0 - 203.230.159.255
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:  2017-02-02T04:55:23Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        [email protected] 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:         [email protected]
nic-hdl:        IM70-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-11-17T00:10:02Z
source:         APNIC

inetnum:        203.230.128.0 - 203.230.159.255
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:        [email protected] 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:         [email protected]
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:         [email protected]
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

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
203.230.32.0/20	AS17595	Korea Institute of Nuclear Safety	4,096
203.230.80.0/20	AS4766	Korean Education Network	4,096
203.230.64.0/21	AS1237	KISTI	2,048
203.230.24.0/21	AS1237	Korea Institute of Science and Technology Information	2,048
203.230.192.0/22	AS18329	SANGMYUNG UNIVERSITY	1,024
203.230.16.0/23	AS1237	Korea Institute of Science and Technology Information	512
203.230.196.0/23	AS18329	SANGMYUNG UNIVERSITY	512
203.230.212.0/23	AS18028	Gyeongsang National University	512
203.230.4.0/23	AS45363	Sun Moon University	512
203.230.208.0/24	AS10053	Yeonsung University	256
203.230.198.0/24	AS18329	SANGMYUNG UNIVERSITY	256
203.230.199.0/24	AS3786	Kkottongnae Hyundo University of Social Welfare	256
203.230.218.0/24	AS3786	Korea Soongsil Cyber University	256
203.230.132.0/24	AS4766	Appeals Commission for Education	256
203.230.219.0/24	AS4766	Chungkang College Of Cultural Industries	256
203.230.254.0/24	AS4766	Choonhae College	256
203.230.255.0/24	AS4766	Choonhae College	256
203.230.214.0/24	AS18028	Gyeongsang National University	256
203.230.209.0/24	AS10053	Yeonsung University	256
203.230.240.0/24	AS18023	Korea Maritime University(KMU)	256
203.230.241.0/24	AS18023	Korea Maritime University(KMU)	256
203.230.242.0/24	AS18023	Korea Maritime University(KMU)	256
203.230.243.0/24	AS18023	Korea Maritime University(KMU)	256
203.230.252.0/24	AS18023	Korea Maritime University(KMU)	256
203.230.253.0/24	AS18023	Korea Maritime University(KMU)	256
203.230.133.0/24	AS9691	Kyungsung University	256
203.230.215.0/24	AS9691	Kyungsung University	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
203.230.135.254	AS4766 Korea Telecom	`3.80ms` 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
174.101.31.56	AS10796 Charter Communications Inc	`18.20ms` from Ashburn, US
75.26.146.200	AS7018 AT&T Enterprises, LLC	`6.35ms` from Chicago, US
149.106.119.248	AS394838 Pulse	`2.57ms` from Denver, US
18.202.95.232	AS16509 Amazon.com, Inc.	`0.20ms` from Dublin, IE
54.171.220.72	AS16509 Amazon.com, Inc.	`0.17ms` from Dublin, IE
84.181.56.216	AS3320 Deutsche Telekom AG	`2.49ms` from Frankfurt am Main, DE
167.71.252.72	AS14061 DigitalOcean, LLC	`0.23ms` from New York City, US
31.24.24.8	AS49814 TomGate LLC	`4.76ms` from Novosibirsk, RU
79.213.91.184	AS3320 Deutsche Telekom AG	`10.05ms` from Nuernberg, DE
176.185.189.152	AS5410 Bouygues Telecom SA	`1.94ms` from Paris, FR
3.212.224.88	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
189.122.248.8	AS28573 Claro NXT Telecomunicacoes Ltda	`2.48ms` from Rio de Janeiro, BR
70.69.178.40	AS6327 Shaw Communications	`9.33ms` from Seattle, US
180.68.146.8	AS9318 SK Broadband Co Ltd	`7.23ms` from Seoul, KR
126.87.85.104	AS17676 SoftBank Corp.	`6.63ms` from Tokyo, JP
69.90.103.200	AS13768 Aptum Technologies	`0.28ms` from Vancouver, CA
79.240.132.216	AS3320 Deutsche Telekom AG	`3.56ms` from Zuerich, CH
102.46.164.40	AS8452 TE-AS	`3.94ms` from Cairo, EG
54.171.103.24	AS16509 Amazon.com, Inc.	`0.18ms` from Dublin, IE
104.33.193.152	AS20001 Charter Communications Inc	`3.53ms` from Los Angeles, US
2.239.215.136	AS12874 Fastweb SpA	`1.30ms` from Milan, IT
95.248.16.168	AS3269 Telecom Italia S.p.A.	`1.90ms` from Milan, IT
9.235.104.184	AS8075 Microsoft Corporation	`0.18ms` from Milan, IT
13.223.251.120	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
62.85.57.168	AS12578 SIA Tet	`3.10ms` from Riga, LV

Traceroute

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

traceroute -a -n -q1 -f7 203.230.135.254

traceroute to 203.230.135.254 (203.230.135.254): 64 hops max, 52 byte packets

7 [AS4766] 112.174.117.102 4.145 ms

8 [AS4766] 112.188.145.138 5.935 ms

9 *

10 [AS4766] 203.230.135.254 4.467 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 14th 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.

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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