203.230.136.0/21

AS9523 · Mokwon University

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Summary

Country	South Korea
Domain	kren.kr
ASN	AS9523
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:        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:        203.230.128.0 - 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
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 203.230.0.0/16

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 8 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.230.137.118	mokwon.ac.kr	7
203.230.137.100	mw.ac.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

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

IP Address	ASN	Details
203.230.142.114	AS9523 Mokwon University	`4.55ms` from Seoul, KR
203.230.137.60	AS9523 Mokwon University	`4.18ms` from Seoul, KR
203.230.136.247	AS9523 Mokwon University	`5.33ms` 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
120.246.98.101	AS56048 China Mobile Communicaitons Corporation	`2.56ms` from Beijing, CN
178.220.236.181	AS8400 TELEKOM SRBIJA a.d.	`0.54ms` from Belgrade, RS
182.75.212.181	AS9498 BHARTI Airtel Ltd.	`0.77ms` from Chennai, IN
136.228.75.181	AS395379 SCI REMC	`6.93ms` from Chicago, US
34.59.238.69	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
99.81.0.165	AS16509 Amazon.com, Inc.	`0.23ms` from Dublin, IE
222.175.164.229	AS4134 CHINANET-BACKBONE	`7.43ms` from Jinan, CN
211.25.7.197	AS9930 TTNET-MY	`1.94ms` from Kuala Lumpur, MY
95.145.213.197	AS2856 British Telecommunications PLC	`2.05ms` from London, GB
137.222.21.5	AS786 Jisc Services Limited	`5.90ms` from London, GB
185.133.202.5	AS209344 ENA Operador de Telecomunicaciones S.L.	`0.61ms` from Madrid, ES
119.47.250.69	AS7679 QTnet,Inc.	`7.55ms` from Osaka, JP
23.108.152.197	AS396190 Leaseweb USA, Inc.	`0.17ms` from Seattle, US
111.249.170.5	AS3462 Data Communication Business Group	`1.00ms` from Taipei, TW
106.153.43.53	AS2516 KDDI CORPORATION	`6.66ms` from Tokyo, JP
89.219.227.245	AS58224 Iran Telecommunication Company PJS	`17.38ms` from Yerevan, AM
58.31.128.53	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`9.54ms` from Beijing, CN
1.92.25.37	AS55990 Huawei Cloud Service data center	`14.59ms` from Beijing, CN
84.132.140.229	AS3320 Deutsche Telekom AG	`3.27ms` from Berlin, DE
199.126.193.37	AS852 TELUS Communications Inc.	`6.85ms` from Calgary, CA
117.219.141.213	AS9829 National Internet Backbone	`13.27ms` from Delhi, IN
73.243.81.213	AS7922 Comcast Cable Communications, LLC	`6.12ms` from Denver, US
66.6.169.229	AS11696 Fusion, LLC	`4.05ms` from Detroit, US
115.29.205.101	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`3.76ms` from Hangzhou, CN
123.17.161.69	AS45899 VNPT Corp	`3.16ms` from Hanoi, VN

Traceroute

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

traceroute -a -n -q1 -f3 -m6 203.230.142.200

traceroute to 203.230.142.200 (203.230.142.200): 6 hops max, 52 byte packets

3 [AS50917] 45.152.39.199 0.479 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On November 14th 2025

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