203.255.212.0/22

AS18023 · Korea Maritime and Ocean University

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Summary

Country	South Korea
Domain	kren.kr
ASN	AS18023
Registry	APNIC
ID	KREN

WHOIS Details

inetnum:        203.255.212.0 - 203.255.215.255
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:  2017-02-02T04:55:35Z
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:        203.255.212.0 - 203.255.215.255
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

Nearby Ranges

BGP prefixes that overlap with 203.255.0.0/16

Range	ASN	Company	Num of IPs
203.255.0.0/18	AS18028	GyeongSang National University	16,384
203.255.64.0/19	AS18158	CHUNGBUK NATIONAL UNIVERSITY	8,192
203.255.128.0/19	AS9848	SEJONG NETWORKS	8,192
203.255.248.0/21	AS9270	National Infomation Society Agency	2,048
203.255.240.0/21	AS9273	ITCENENTEC CO.,LTD.	2,048
203.255.224.0/21	AS23975	Yonam Institute of Technology	2,048
203.255.236.0/22	AS38426	KOREA RURAL ECONOMIC INSTITUTE	1,024
203.255.220.0/23	AS9970	Korean Education Network	512
203.255.232.0/23	AS9975	Gyeongsangbuk-do Education Research Institute	512
203.255.234.0/24	AS3786	LG DACOM Corporation	256

Hosted domains

There are 3 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

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

IP Address	ASN	Details
203.255.214.12	AS18023 Korea Maritime and Ocean University	`6.63ms` from Seoul, KR
203.255.215.15	AS18023 Korea Maritime and Ocean University	`6.13ms` from Seoul, KR
203.255.213.207	AS18023 Korea Maritime and Ocean University	`7.07ms` from Seoul, KR
203.255.212.171	AS18023 Korea Maritime and Ocean University	`5.71ms` 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
107.125.143.102	AS20057 AT&T Enterprises, LLC	`2.41ms` from Ashburn, US
96.255.181.70	AS701 Verizon Business	`2.34ms` from Ashburn, US
98.218.221.230	AS7922 Comcast Cable Communications, LLC	`9.45ms` from Ashburn, US
152.3.67.230	AS13371 Duke University	`11.10ms` from Atlanta, US
49.48.44.246	AS45758 Triple T Broadband Public Company Limited	`2.81ms` from Bangkok, TH
54.68.135.150	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
221.8.202.86	AS4837 CHINA UNICOM China169 Backbone	`8.11ms` from Changchun, CN
50.79.127.166	AS7922 Comcast Cable Communications, LLC	`5.19ms` from Chicago, US
80.142.68.22	AS3320 Deutsche Telekom AG	`7.48ms` from Frankfurt am Main, DE
218.20.144.150	AS4134 CHINANET-BACKBONE	`2.71ms` from Guangzhou, CN
223.7.245.182	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.68ms` from Hangzhou, CN
104.5.88.150	AS7018 AT&T Enterprises, LLC	`3.29ms` from Miami, US
76.66.183.182	AS577 Bell Canada	`4.12ms` from Montreal, CA
98.88.181.150	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
189.141.220.102	AS8151 UNINET	`11.18ms` from Santiago de Queretaro, MX
200.161.102.214	AS27699 TELEFÔNICA BRASIL S.A	`1.97ms` from São Paulo, BR
121.117.195.54	AS4713 NTT DOCOMO BUSINESS,Inc.	`8.28ms` from Tokyo, JP
178.159.24.6	AS8359 MTS PJSC	`9.49ms` from Yekaterinburg, RU
188.203.1.150	AS1136 KPN B.V.	`11.29ms` from Amsterdam, NL
20.123.217.22	AS8075 Microsoft Corporation	`0.35ms` from Amsterdam, NL
197.52.161.182	AS8452 TE-AS	`4.85ms` from Cairo, EG
107.220.42.38	AS7018 AT&T Enterprises, LLC	`6.56ms` from Chicago, US
50.194.101.182	AS7922 Comcast Cable Communications, LLC	`4.56ms` from Chicago, US
27.9.180.86	AS4837 CHINA UNICOM China169 Backbone	`2.48ms` from Chongqing, CN
5.196.194.22	AS16276 OVH SAS	`0.04ms` from Gravelines, FR

Traceroute

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

traceroute -a -n -q1 203.255.212.177

traceroute to 203.255.212.177 (203.255.212.177): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.44 0.088 ms

2 *

3 *

4 [AS3786] 1.208.168.201 26.585 ms

5 *

6 [AS3786] 1.213.134.50 10.031 ms

7 [AS3786] 210.124.239.138 7.056 ms

8 [AS18023] 121.144.250.2 8.027 ms

9 [AS18023] 203.230.244.2 6.958 ms

10 [AS18023] 203.255.212.177 6.525 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On February 7th 2026

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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