1. All IP Ranges
  2. 210.0.0.0/8
  3. 210.181.0.0/16
  4. AS4766  | 210.181.128.0/18

210.181.128.0/18

AS4766  ·  Korea Telecom

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Summary

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

WHOIS Details

inetnum:        210.181.128.0 - 210.181.191.255
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:  2017-02-02T04:55:45Z
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:        210.181.128.0 - 210.181.191.255
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

Overlapping Ranges

BGP prefixes that are contained by 210.181.128.0/18

Range ASN Company Num of IPs
210.181.164.0/24 AS10053 Yeonsung University 256
210.181.165.0/24 AS10053 Yeonsung University 256
210.181.166.0/24 AS10053 Yeonsung University 256
210.181.185.0/24 AS3786 Dongyang Technical College 256
210.181.186.0/24 AS3786 Dongyang Technical College 256
210.181.187.0/24 AS3786 Dongyang Technical College 256
210.181.148.0/24 AS9970 Korea University Of Technology And Education 256
210.181.149.0/24 AS9970 Korea University Of Technology And Education 256
210.181.151.0/24 AS9970 Korea University Of Technology And Education 256
210.181.158.0/24 AS4766 HANYOUNG THEOLOGICAL UNIVERSITY 256
210.181.159.0/24 AS4766 HANYOUNG THEOLOGICAL UNIVERSITY 256
210.181.160.0/24 AS4766 YoungNam Theological College 256
210.181.161.0/24 AS4766 YoungNam Theological College 256
210.181.183.0/24 AS4766 SEOUL NATIONAL UNIVERSITY 256
210.181.184.0/24 AS4766 SEOUL NATIONAL UNIVERSITY 256
210.181.172.0/24 AS9859 Chung Cheong University 256
210.181.173.0/24 AS9859 Chung Cheong University 256
210.181.174.0/24 AS9859 Chung Cheong University 256
210.181.175.0/24 AS9859 Chung Cheong University 256
210.181.176.0/24 AS9859 Chung Cheong University 256
210.181.177.0/24 AS9859 Chung Cheong University 256
210.181.178.0/24 AS9859 Chung Cheong University 256
210.181.188.0/23 AS4766 Dong Kang College 512
210.181.168.0/22 AS4766 SEOUL INSTITUTE OF THE ARTS 1,024

Nearby Ranges

BGP prefixes that overlap with 210.181.0.0/16

Range ASN Company Num of IPs
210.181.224.0/19 AS4663 ELIMNET, INC. 8,192
210.181.192.0/19 AS7557 Korea Trade Network 8,192
210.181.64.0/19 AS9318 SK Broadband Co Ltd 8,192
210.181.96.0/19 AS9318 SK Broadband Co Ltd 8,192
210.181.32.0/19 AS3786 LG DACOM Corporation 8,192
210.181.16.0/20 AS9457 DREAMLINE CO. 4,096
210.181.168.0/22 AS4766 SEOUL INSTITUTE OF THE ARTS 1,024
210.181.188.0/23 AS4766 Dong Kang College 512
210.181.159.0/24 AS4766 HANYOUNG THEOLOGICAL UNIVERSITY 256
210.181.160.0/24 AS4766 YoungNam Theological College 256
210.181.161.0/24 AS4766 YoungNam Theological College 256
210.181.183.0/24 AS4766 SEOUL NATIONAL UNIVERSITY 256
210.181.184.0/24 AS4766 SEOUL NATIONAL UNIVERSITY 256
210.181.109.0/24 AS55615 Duzon Bizon Co. Ltd 256
210.181.172.0/24 AS9859 Chung Cheong University 256
210.181.173.0/24 AS9859 Chung Cheong University 256
210.181.174.0/24 AS9859 Chung Cheong University 256
210.181.175.0/24 AS9859 Chung Cheong University 256
210.181.176.0/24 AS9859 Chung Cheong University 256
210.181.177.0/24 AS9859 Chung Cheong University 256
210.181.178.0/24 AS9859 Chung Cheong University 256
210.181.148.0/24 AS9970 Korea University Of Technology And Education 256
210.181.149.0/24 AS9970 Korea University Of Technology And Education 256
210.181.164.0/24 AS10053 Yeonsung University 256
210.181.151.0/24 AS9970 Korea University Of Technology And Education 256
210.181.165.0/24 AS10053 Yeonsung University 256
210.181.166.0/24 AS10053 Yeonsung University 256
210.181.62.0/24 AS17598 LG Uplus 256
210.181.185.0/24 AS3786 Dongyang Technical College 256
210.181.186.0/24 AS3786 Dongyang Technical College 256
210.181.187.0/24 AS3786 Dongyang Technical College 256
210.181.24.0/24 AS38676 Flexnetwork 256
210.181.158.0/24 AS4766 HANYOUNG THEOLOGICAL UNIVERSITY 256

Hosted domains

There are 6 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
210.181.181.91 songgok.ac.kr 2
210.181.158.89 hytu.ac.kr 1
210.181.136.7 kinst.ac.kr 1
210.181.136.22 gtec.ac.kr 1

Hosted domains API

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Useful for Cybersecurity
Read more

Pingable IPs

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

IP Address ASN Details
210.181.142.239 AS9970 Korea University of Technology and Education 3.41ms from Seoul, KR
210.181.137.89 AS4766 Korea Telecom 3.61ms from Seoul, KR
210.181.146.83 AS9970 Korea University of Technology and Education 3.58ms from Seoul, KR
210.181.135.245 AS4766 Korea Telecom 5.08ms from Seoul, KR
210.181.143.80 AS9970 Korea University of Technology and Education 3.63ms from Seoul, KR
210.181.141.253 AS4766 Korea Telecom 1.72ms from Seoul, KR
210.181.148.254 AS9970 Korea University of Technology and Education 4.29ms from Seoul, KR
210.181.181.9 AS4766 Korea Telecom 2.34ms from Seoul, KR
210.181.130.252 AS4766 Korea Telecom 5.44ms from Seoul, KR
210.181.158.253 AS4766 Korea Telecom 1.24ms from Seoul, KR
210.181.132.252 AS4766 Korea Telecom 5.17ms from Seoul, KR
210.181.128.3 AS4766 Korea Telecom 4.88ms from Seoul, KR
210.181.184.1 AS4766 Korea Telecom 2.91ms from Seoul, KR
210.181.136.90 AS4766 Korea Telecom 1.83ms from Seoul, KR
210.181.129.252 AS4766 Korea Telecom 5.66ms from Seoul, KR
210.181.131.245 AS4766 Korea Telecom 5.37ms from Seoul, KR
210.181.144.178 AS9970 Korea University of Technology and Education 3.20ms from Seoul, KR
210.181.160.214 AS4766 Korea Telecom 5.24ms from Seoul, KR
210.181.182.251 AS4766 Korea Telecom 3.14ms from Seoul, KR
210.181.183.123 AS4766 Korea Telecom 2.86ms from Seoul, KR
210.181.134.243 AS4766 Korea Telecom 5.26ms from Seoul, KR
210.181.161.2 AS4766 Korea Telecom 5.80ms from Seoul, KR
210.181.149.251 AS9970 Korea University of Technology and Education 4.62ms from Seoul, KR
210.181.147.253 AS9970 Korea University of Technology and Education 3.49ms from Seoul, KR
210.181.151.253 AS9970 Korea University of Technology and Education 4.54ms 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
77.160.190.130 AS1136 KPN B.V. 2.13ms from Amsterdam, NL
46.231.193.2 AS198745 ALSO International Services GmbH 4.15ms from Amsterdam, NL
114.253.222.98 AS4808 China Unicom Beijing Province Network 3.83ms from Beijing, CN
54.191.90.82 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
40.89.73.130 AS8075 Microsoft Corporation 0.34ms from Boydton, US
41.137.101.18 AS36884 Wana Corporate 6.56ms from Casablanca, MA
50.107.105.130 AS5650 Frontier Communications of America, Inc. 11.21ms from Chicago, US
96.45.227.194 AS46632 Southwest Arkansas Telephone Cooperative 5.53ms from Dallas, US
191.10.181.210 AS26599 TELEFÔNICA BRASIL S.A 10.96ms from Fortaleza, BR
93.241.19.34 AS3320 Deutsche Telekom AG 0.86ms from Frankfurt am Main, DE
14.169.209.50 AS45899 VNPT Corp 1.17ms from Ho Chi Minh City, VN
121.57.162.2 AS4134 CHINANET-BACKBONE 6.06ms from Hohhot, CN
195.147.153.82 AS5413 Wavenet Limited 4.55ms from London, GB
101.140.141.210 AS17511 OPTAGE Inc. 3.75ms from Osaka, JP
34.203.199.66 AS14618 Amazon.com, Inc. 0.44ms from Reston, US
95.246.10.226 AS3269 Telecom Italia S.p.A. 7.17ms from Rome, IT
13.113.198.98 AS16509 Amazon.com, Inc. 0.18ms from Tokyo, JP
180.15.188.114 AS4713 NTT DOCOMO BUSINESS,Inc. 15.78ms from Tokyo, JP
212.110.161.194 AS35425 IOMART MANAGED SERVICES LIMITED 0.10ms from York, GB
96.38.27.146 AS20115 Charter Communications LLC 12.44ms from Atlanta, US
124.205.41.2 AS4808 China Unicom Beijing Province Network 4.73ms from Beijing, CN
196.120.84.2 AS36925 MEDITELECOM 4.07ms from Casablanca, MA
89.115.161.82 AS12353 Vodafone Portugal 2.13ms from Lisbon, PT
6.8.10.18 AS668 United States Department of Defense (DoD) 1.78ms from Los Angeles, US
95.63.179.50 AS12430 VODAFONE ESPANA S.A.U. 10.40ms from Madrid, ES

Traceroute

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

$
traceroute -a -n -q1 -f5 -m9 210.181.167.222
traceroute to 210.181.167.222 (210.181.167.222): 9 hops max, 52 byte packets
5 [AS3356] 4.68.72.198 136.099 ms
6 [AS4766] 112.174.87.49 727.551 ms
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Coventry, GB
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.

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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