210.125.128.0/17

AS4766  ·  Korea Telecom

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Summary

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

WHOIS Details

inetnum:        210.125.128.0 - 210.125.255.255
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:  2017-02-02T04:55:44Z
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:        210.125.128.0 - 210.125.255.255
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
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 210.125.128.0/17

Range ASN Company Num of IPs
210.125.192.0/24 AS9867 Jeonju Technical College 256
210.125.193.0/24 AS9867 Jeonju Technical College 256
210.125.194.0/24 AS9867 Jeonju Technical College 256
210.125.195.0/24 AS9867 Jeonju Technical College 256
210.125.196.0/24 AS9867 Jeonju Technical College 256
210.125.197.0/24 AS9867 Jeonju Technical College 256
210.125.198.0/24 AS9867 Jeonju Technical College 256
210.125.199.0/24 AS9867 Jeonju Technical College 256
210.125.231.0/24 AS10190 jungbuUniversity 256
210.125.140.0/24 AS3786 SUWON WOMEN'S COLLEGE 256
210.125.141.0/24 AS3786 SUWON WOMEN'S COLLEGE 256
210.125.142.0/24 AS3786 SUWON WOMEN'S COLLEGE 256
210.125.143.0/24 AS3786 SUWON WOMEN'S COLLEGE 256
210.125.164.0/24 AS3786 dongsinUniversity 256
210.125.165.0/24 AS3786 dongsinUniversity 256
210.125.186.0/24 AS3786 JINJU HEALTH COLLEGE 256
210.125.224.0/24 AS3786 EULJI UNIVERSITY 256
210.125.225.0/24 AS3786 EULJI UNIVERSITY 256
210.125.227.0/24 AS3786 EULJI UNIVERSITY 256
210.125.228.0/24 AS3786 EULJI UNIVERSITY 256
210.125.229.0/24 AS3786 EULJI UNIVERSITY 256
210.125.133.0/24 AS4766 Kwangju Womans University 256
210.125.162.0/24 AS4766 Korea Baptist Theological University 256
210.125.163.0/24 AS4766 KOREA NATIONAL SPORT UNIVERSITY 256
210.125.166.0/24 AS4766 DONGJU COLLEGE 256
210.125.167.0/24 AS4766 GWANGJU HEALTH COLLEGE 256
210.125.168.0/24 AS4766 GWANGJU HEALTH COLLEGE 256
210.125.169.0/24 AS4766 GWANGJU HEALTH COLLEGE 256
210.125.170.0/24 AS4766 GWANGJU HEALTH COLLEGE 256
210.125.171.0/24 AS4766 GWANGJU HEALTH COLLEGE 256
210.125.185.0/24 AS4766 NATIONAL INSTITUTE OF KOREAN HISTORY 256
210.125.186.0/24 AS4766 JINJU HEALTH COLLEGE 256
210.125.187.0/24 AS4766 JINJU HEALTH COLLEGE 256
210.125.188.0/24 AS4766 YOUNGDONG UNIVERSITY 256
210.125.189.0/24 AS4766 YOUNGDONG UNIVERSITY 256
210.125.190.0/24 AS4766 YOUNGDONG UNIVERSITY 256
210.125.191.0/24 AS4766 YOUNGDONG UNIVERSITY 256
210.125.204.0/24 AS4766 DONGJU COLLEGE 256
210.125.205.0/24 AS4766 DONGJU COLLEGE 256
210.125.206.0/24 AS4766 DONGJU COLLEGE 256
210.125.207.0/24 AS4766 DONGJU COLLEGE 256
210.125.230.0/24 AS4766 Asian Center for Theological Studies and Mission 256
210.125.172.0/23 AS4766 JINJU HEALTH COLLEGE 512
210.125.216.0/22 AS3786 Kongju National University 1,024
210.125.248.0/21 AS4766 Chodang University 2,048
210.125.144.0/20 AS3786 ChungBuk University 4,096
210.125.144.0/20 AS18158 ChungBuk University 4,096

Nearby Ranges

BGP prefixes that overlap with 210.125.0.0/16

Range ASN Company Num of IPs
210.125.144.0/20 AS3786 ChungBuk University 4,096
210.125.16.0/20 AS23714 Korean Education Network 4,096
210.125.144.0/20 AS18158 ChungBuk University 4,096
210.125.56.0/21 AS1237 Korea Institute of Science and Technology Information 2,048
210.125.88.0/21 AS4766 Sungshin Womens University 2,048
210.125.96.0/21 AS4766 Sungshin Womens University 2,048
210.125.48.0/21 AS17861 Kyungnam College of Information & Technology 2,048
210.125.248.0/21 AS4766 Chodang University 2,048
210.125.216.0/22 AS3786 Kongju National University 1,024
210.125.172.0/23 AS4766 JINJU HEALTH COLLEGE 512
210.125.12.0/23 AS23552 Korea Nazarene University 512
210.125.86.0/23 AS9637 Korea Basic Science Institute 512
210.125.228.0/24 AS3786 EULJI UNIVERSITY 256
210.125.229.0/24 AS3786 EULJI UNIVERSITY 256
210.125.133.0/24 AS4766 Kwangju Womans University 256
210.125.162.0/24 AS4766 Korea Baptist Theological University 256
210.125.163.0/24 AS4766 KOREA NATIONAL SPORT UNIVERSITY 256
210.125.166.0/24 AS4766 DONGJU COLLEGE 256
210.125.167.0/24 AS4766 GWANGJU HEALTH COLLEGE 256
210.125.168.0/24 AS4766 GWANGJU HEALTH COLLEGE 256
210.125.169.0/24 AS4766 GWANGJU HEALTH COLLEGE 256
210.125.170.0/24 AS4766 GWANGJU HEALTH COLLEGE 256
210.125.171.0/24 AS4766 GWANGJU HEALTH COLLEGE 256
210.125.185.0/24 AS4766 NATIONAL INSTITUTE OF KOREAN HISTORY 256
210.125.186.0/24 AS4766 JINJU HEALTH COLLEGE 256
210.125.187.0/24 AS4766 JINJU HEALTH COLLEGE 256
210.125.188.0/24 AS4766 YOUNGDONG UNIVERSITY 256
210.125.189.0/24 AS4766 YOUNGDONG UNIVERSITY 256
210.125.190.0/24 AS4766 YOUNGDONG UNIVERSITY 256
210.125.191.0/24 AS4766 YOUNGDONG UNIVERSITY 256
210.125.204.0/24 AS4766 DONGJU COLLEGE 256
210.125.205.0/24 AS4766 DONGJU COLLEGE 256
210.125.206.0/24 AS4766 DONGJU COLLEGE 256
210.125.207.0/24 AS4766 DONGJU COLLEGE 256
210.125.230.0/24 AS4766 Asian Center for Theological Studies and Mission 256
210.125.106.0/24 AS9775 Hannam University 256
210.125.192.0/24 AS9867 Jeonju Technical College 256
210.125.193.0/24 AS9867 Jeonju Technical College 256
210.125.194.0/24 AS9867 Jeonju Technical College 256
210.125.195.0/24 AS9867 Jeonju Technical College 256
210.125.196.0/24 AS9867 Jeonju Technical College 256
210.125.197.0/24 AS9867 Jeonju Technical College 256
210.125.198.0/24 AS9867 Jeonju Technical College 256
210.125.231.0/24 AS10190 jungbuUniversity 256
210.125.199.0/24 AS9867 Jeonju Technical College 256
210.125.69.0/24 AS1237 Gwangju Institute of Science and Technology 256
210.125.14.0/24 AS23552 Korea Nazarene University 256
210.125.140.0/24 AS3786 SUWON WOMEN'S COLLEGE 256
210.125.141.0/24 AS3786 SUWON WOMEN'S COLLEGE 256

Hosted domains

There are 44 domain names hosted across 30 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
210.125.248.4 chodang.ac.kr 3
210.125.230.2 316.kr 2
210.125.129.20 kwu.ac.kr 2
210.125.200.111 dhc.ac.kr 1
210.125.130.56 kwus.kr 1
210.125.201.252 angiokndir.kr 1
210.125.185.241 koreanhistory.or.kr 1
210.125.204.48 dongju.ac.kr 1
210.125.163.2 knupe.ac.kr 1
210.125.173.9 jhc.ac.kr 1
210.125.201.253 kndir.kr 1
210.125.225.226 canreg.kr 1
210.125.201.251 dkndir.kr 1
210.125.186.11 jhc.ac.kr 1
210.125.204.13 dongju.ac.kr 1
210.125.161.231 kbtus.ac.kr 1
210.125.134.229 jbsc.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

Pingable IPs

1,005 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
210.125.138.3 AS18029 Daejeon Helath Sciences College 4.06ms from Seoul, KR
210.125.147.50 AS18158 CHUNGBUK NATIONAL UNIVERSITY 24.02ms from Seoul, KR
210.125.173.9 AS4766 Korea Telecom 8.57ms from Seoul, KR
210.125.193.28 AS9867 VISION College of Jeonju 4.57ms from Seoul, KR
210.125.136.117 AS18029 Daejeon Helath Sciences College 2.87ms from Seoul, KR
210.125.159.86 AS18158 CHUNGBUK NATIONAL UNIVERSITY 2.64ms from Seoul, KR
210.125.178.20 AS9978 The University of Seoul 2.73ms from Seoul, KR
210.125.151.142 AS18158 CHUNGBUK NATIONAL UNIVERSITY 23.76ms from Seoul, KR
210.125.154.109 AS18158 CHUNGBUK NATIONAL UNIVERSITY 23.60ms from Seoul, KR
210.125.161.9 AS4766 Korea Telecom 3.56ms from Seoul, KR
210.125.170.18 AS4766 Korea Telecom 5.76ms from Seoul, KR
210.125.133.33 AS4766 Korea Telecom 5.17ms from Seoul, KR
210.125.197.46 AS9867 VISION College of Jeonju 4.69ms from Seoul, KR
210.125.200.114 AS4766 Korea Telecom 5.16ms from Seoul, KR
210.125.191.62 AS4766 Korea Telecom 3.67ms from Seoul, KR
210.125.181.21 AS9978 The University of Seoul 2.74ms from Seoul, KR
210.125.169.7 AS4766 Korea Telecom 5.75ms from Seoul, KR
210.125.162.14 AS4766 Korea Telecom 4.57ms from Seoul, KR
210.125.163.1 AS4766 Korea Telecom 1.38ms from Seoul, KR
210.125.177.64 AS9978 The University of Seoul 4.38ms from Seoul, KR
210.125.137.252 AS18029 Daejeon Helath Sciences College 3.19ms from Seoul, KR
210.125.139.254 AS18029 Daejeon Helath Sciences College 2.85ms from Seoul, KR
210.125.134.229 AS4766 Korea Telecom 5.74ms from Seoul, KR
210.125.160.48 AS4766 Korea Telecom 3.95ms from Seoul, KR
210.125.189.2 AS4766 Korea Telecom 4.36ms 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
212.84.138.1 AS12414 Solcon Internetdiensten B.V. 0.86ms from Amsterdam, NL
217.103.94.1 AS33915 Vodafone Libertel B.V. 2.29ms from Amsterdam, NL
96.104.6.129 AS7922 Comcast Cable Communications, LLC 0.41ms from Ashburn, US
72.212.183.113 AS22773 Cox Communications Inc. 3.01ms from Atlanta, US
86.127.64.113 AS8708 DIGI ROMANIA S.A. 2.65ms from Bacau, RO
171.99.149.1 AS17552 True Online 2.72ms from Bangkok, TH
58.11.120.1 AS17552 True Online 1.98ms from Bangkok, TH
119.76.159.1 AS17552 True Online 2.01ms from Bangkok, TH
222.131.11.161 AS4808 China Unicom Beijing Province Network 3.33ms from Beijing, CN
49.206.24.1 AS24309 Atria Convergence Technologies Pvt. Ltd. Broadband Internet Service Provider INDIA 1.12ms from Bengaluru, IN
74.104.236.1 AS701 Verizon Business 2.33ms from Boston, US
178.143.133.1 AS15962 Orange Slovensko a.s. 5.11ms from Bratislava, SK
109.100.0.1 AS9050 Orange Romania S.A. 1.53ms from Bucharest, RO
84.243.73.65 AS9050 Orange Romania S.A. 1.03ms from Bucharest, RO
181.46.232.1 AS27747 Telecentro S.A. 0.84ms from Buenos Aires, AR
199.126.104.1 AS852 TELUS Communications Inc. 1.40ms from Calgary, CA
216.41.252.1 AS22051 Bristol Tennessee Essential Services 6.19ms from Charlotte, US
118.125.26.1 AS4134 CHINANET-BACKBONE 8.79ms from Chengdu, CN
75.240.79.81 AS6167 Verizon Business 19.26ms from Chicago, US
73.146.20.1 AS7922 Comcast Cable Communications, LLC 9.41ms from Chicago, US
217.210.202.1 AS3301 Telia Company AB 3.37ms from Copenhagen, DK
206.82.116.1 AS11471 New Source Broadband 4.98ms from Dallas, US
160.2.252.1 AS11492 CABLE ONE, INC. 9.71ms from Dallas, US
52.129.3.1 AS7459 Grande Communications Networks, LLC 5.91ms from Dallas, US
174.22.128.1 AS209 CenturyLink Communications, LLC 2.06ms from Denver, US

Traceroute

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

$
traceroute -a -n -q1 -f3 -m9 210.125.216.29
traceroute to 210.125.216.29 (210.125.216.29): 9 hops max, 52 byte packets
3 [AS3356] 4.69.219.45 165.757 ms
4 [AS3356] 4.68.111.74 165.251 ms
5 [AS3786] 1.208.112.145 166.173 ms
6 [AS3786] 1.208.147.161 301.676 ms
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Budapest, HU
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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