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:        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:        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
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 210.125.0.0/16

Range	ASN	Company	Num of IPs
210.125.16.0/20	AS23714	Korean Education Network	4,096

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
210.125.163.34	knsu.ac.kr	4
210.125.167.13	ghu.ac.kr	2
210.125.186.11	jhc.ac.kr	1
210.125.130.5	kwu.ac.kr	1
210.125.130.56	kwus.kr	1
210.125.185.222	history.go.kr	1
210.125.163.2	knupe.ac.kr	1
210.125.225.226	canreg.kr	1
210.125.201.252	angiokndir.kr	1
210.125.173.9	jhc.ac.kr	1
210.125.201.251	dkndir.kr	1
210.125.200.111	dhc.ac.kr	1
210.125.204.11	dongju.ac.kr	1
210.125.201.253	kndir.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

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

IP Address	ASN	Details
210.125.173.9	AS4766 Korea Telecom	`7.99ms` from Seoul, KR
210.125.211.3	AS3786 LG DACOM Corporation	`3.33ms` from Seoul, KR
210.125.140.131	AS3786 LG DACOM Corporation	`3.02ms` from Seoul, KR
210.125.202.1	AS4766 Korea Telecom	`5.92ms` from Seoul, KR
210.125.133.33	AS4766 Korea Telecom	`5.24ms` from Seoul, KR
210.125.246.1	AS4766 Korea Telecom	`1.65ms` from Seoul, KR
210.125.188.1	AS4766 Korea Telecom	`4.79ms` from Seoul, KR
210.125.157.42	AS18158 CHUNGBUK NATIONAL UNIVERSITY	`23.61ms` from Seoul, KR
210.125.156.153	AS18158 CHUNGBUK NATIONAL UNIVERSITY	`23.11ms` from Seoul, KR
210.125.247.1	AS4766 Korea Telecom	`1.80ms` from Seoul, KR
210.125.163.104	AS4766 Korea Telecom	`1.34ms` from Seoul, KR
210.125.137.252	AS18029 Daejeon Helath Sciences College	`3.23ms` from Seoul, KR
210.125.158.23	AS3786 LG DACOM Corporation	`4.52ms` from Seoul, KR
210.125.141.206	AS3786 LG DACOM Corporation	`2.71ms` from Seoul, KR
210.125.159.254	AS18158 CHUNGBUK NATIONAL UNIVERSITY	`2.85ms` from Seoul, KR
210.125.204.54	AS4766 Korea Telecom	`6.45ms` from Seoul, KR
210.125.160.48	AS4766 Korea Telecom	`3.57ms` from Seoul, KR
210.125.132.1	AS4766 Korea Telecom	`4.93ms` from Seoul, KR
210.125.224.40	AS3786 LG DACOM Corporation	`3.00ms` from Seoul, KR
210.125.207.181	AS4766 Korea Telecom	`6.60ms` from Seoul, KR
210.125.184.84	AS4766 Korea Telecom	`1.13ms` from Seoul, KR
210.125.189.2	AS4766 Korea Telecom	`4.25ms` from Seoul, KR
210.125.130.5	AS4766 Korea Telecom	`5.21ms` from Seoul, KR
210.125.176.78	AS9978 The University of Seoul	`3.37ms` from Seoul, KR
210.125.138.3	AS18029 Daejeon Helath Sciences College	`4.06ms` 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
194.122.253.81	AS1136 KPN B.V.	`11.28ms` from Amsterdam, NL
217.120.117.1	AS33915 Vodafone Libertel B.V.	`5.35ms` from Amsterdam, NL
83.83.163.1	AS33915 Vodafone Libertel B.V.	`1.46ms` from Amsterdam, NL
89.220.0.1	AS33915 Vodafone Libertel B.V.	`0.86ms` from Amsterdam, NL
84.30.70.1	AS33915 Vodafone Libertel B.V.	`2.43ms` from Amsterdam, NL
91.229.61.129	AS6206 Netrouting B.V.	`1.27ms` from Amsterdam, NL
73.207.107.33	AS7922 Comcast Cable Communications, LLC	`4.83ms` from Atlanta, US
198.50.252.65	AS16276 OVH SAS	`0.07ms` from Beauharnois, CA
1.88.217.209	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`10.04ms` from Beijing, CN
49.206.24.1	AS24309 Atria Convergence Technologies Pvt. Ltd. Broadband Internet Service Provider INDIA	`1.10ms` from Bengaluru, IN
85.67.62.1	AS20845 DIGI Tavkozlesi es Szolgaltato Kft.	`3.84ms` from Budapest, HU
79.121.79.1	AS5483 Magyar Telekom Plc.	`8.42ms` from Budapest, HU
197.160.167.81	AS24863 Link Egypt (Link.NET)	`10.70ms` from Cairo, EG
117.200.112.1	AS9829 National Internet Backbone	`18.66ms` from Chennai, IN
64.184.116.1	AS22110 Ligtel Communications, Inc.	`4.01ms` from Chicago, US
217.210.202.1	AS3301 Telia Company AB	`3.35ms` from Copenhagen, DK
177.16.56.1	AS18881 TELEFÔNICA BRASIL S.A	`4.47ms` from Curitiba, BR
124.94.136.161	AS4837 CHINA UNICOM China169 Backbone	`8.83ms` from Dalian, CN
103.248.15.129	AS58923 InterCloud ltd	`0.40ms` from Dhaka, BD
86.110.41.113	AS202656 Ivanov Vitaliy Sergeevich	`0.26ms` from Frankfurt am Main, DE
218.86.42.209	AS4134 CHINANET-BACKBONE	`3.17ms` from Fuzhou, CN
87.65.9.209	AS5432 Proximus NV	`5.12ms` from Gravelines, FR
120.237.164.209	AS9808 China Mobile Communications Group Co., Ltd.	`6.80ms` from Guangzhou, CN
39.134.144.33	AS24444 Shandong Mobile Communication Company Limited	`0.67ms` from Jinan, CN
39.137.79.65	AS24444 Shandong Mobile Communication Company Limited	`1.56ms` from Jinan, CN

Traceroute

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

traceroute -a -n -q1 -m11 210.125.144.245

traceroute to 210.125.144.245 (210.125.144.245): 11 hops max, 52 byte packets

1 [AS15169] 72.14.236.39 108.742 ms

2 *

3 [AS4766] 112.174.84.61 157.508 ms

4 [AS4766] 112.174.49.218 154.362 ms

5 [AS4766] 112.188.195.14 151.045 ms

6 *

7 [AS4766] 211.38.88.182 150.695 ms

8 [AS18158] 210.125.159.69 154.607 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Delhi, IN

On November 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.

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