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
210.125.246.1	AS4766 Korea Telecom	`1.65ms` from Seoul, KR
210.125.244.1	AS4766 Korea Telecom	`1.75ms` from Seoul, KR
210.125.245.1	AS4766 Korea Telecom	`1.81ms` from Seoul, KR
210.125.239.11	AS10190 Joongbu University	`5.13ms` from Seoul, KR
210.125.242.1	AS4766 Korea Telecom	`1.62ms` from Seoul, KR
210.125.243.1	AS4766 Korea Telecom	`1.78ms` from Seoul, KR
210.125.240.102	AS4766 Korea Telecom	`1.34ms` from Seoul, KR
210.125.238.31	AS10190 Joongbu University	`5.47ms` from Seoul, KR
210.125.247.1	AS4766 Korea Telecom	`1.80ms` from Seoul, KR
210.125.248.20	AS4766 Korea Telecom	`6.29ms` from Seoul, KR
210.125.241.1	AS4766 Korea Telecom	`1.81ms` from Seoul, KR
210.125.170.37	AS4766 Korea Telecom	`5.67ms` from Seoul, KR
210.125.157.42	AS18158 CHUNGBUK NATIONAL UNIVERSITY	`23.61ms` from Seoul, KR
210.125.207.181	AS4766 Korea Telecom	`6.60ms` from Seoul, KR
210.125.197.46	AS9867 VISION College of Jeonju	`5.00ms` from Seoul, KR
210.125.193.28	AS9867 VISION College of Jeonju	`4.53ms` from Seoul, KR
210.125.203.25	AS4766 Korea Telecom	`5.85ms` from Seoul, KR
210.125.223.60	AS18029 Daejeon Helath Sciences College	`3.04ms` from Seoul, KR
210.125.154.63	AS18158 CHUNGBUK NATIONAL UNIVERSITY	`23.96ms` from Seoul, KR
210.125.192.6	AS9867 VISION College of Jeonju	`4.12ms` from Seoul, KR
210.125.159.254	AS18158 CHUNGBUK NATIONAL UNIVERSITY	`2.85ms` from Seoul, KR
210.125.140.131	AS3786 LG DACOM Corporation	`3.02ms` from Seoul, KR
210.125.171.214	AS4766 Korea Telecom	`5.75ms` from Seoul, KR
210.125.132.1	AS4766 Korea Telecom	`4.93ms` from Seoul, KR
210.125.191.62	AS4766 Korea Telecom	`3.60ms` 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
212.187.20.1	AS33915 Vodafone Libertel B.V.	`3.66ms` from Amsterdam, NL
217.120.117.1	AS33915 Vodafone Libertel B.V.	`5.37ms` from Amsterdam, NL
72.9.3.1	AS11776 Breezeline	`4.75ms` from Ashburn, US
50.169.53.193	AS7922 Comcast Cable Communications, LLC	`2.73ms` from Ashburn, US
20.119.27.129	AS8075 Microsoft Corporation	`0.36ms` from Ashburn, US
32.13.106.129	AS7018 AT&T Enterprises, LLC	`2.43ms` from Atlanta, US
73.28.228.1	AS7922 Comcast Cable Communications, LLC	`15.42ms` from Atlanta, US
36.77.16.1	AS7713 PT Telekomunikasi Indonesia	`1.17ms` from Batam, ID
181.56.172.1	AS10620 Telmex Colombia S.A.	`1.14ms` from Bogota, CO
201.228.146.145	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`10.44ms` from Bogota, CO
196.245.154.65	AS41564 Orion Network Limited	`2.37ms` from Bratislava, SK
94.248.152.1	AS43529 ViDaNet Cabletelevision Provider Ltd.	`3.10ms` from Budapest, HU
186.136.137.1	AS7303 Telecom Argentina S.A.	`1.63ms` from Buenos Aires, AR
75.156.138.1	AS852 TELUS Communications Inc.	`6.71ms` from Calgary, CA
24.231.149.1	AS20115 Charter Communications LLC	`11.00ms` from Chicago, US
125.81.38.1	AS4134 CHINANET-BACKBONE	`2.08ms` from Chongqing, CN
151.13.228.193	AS1267 WIND TRE S.P.A.	`11.18ms` from Crotone, IT
45.168.138.49	AS268061 CRISTIANO ALMEIDA ME	`16.20ms` from Curitiba, BR
66.210.200.129	AS22773 Cox Communications Inc.	`4.80ms` from Dallas, US
122.160.172.1	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.99ms` from Delhi, IN
174.22.128.1	AS209 CenturyLink Communications, LLC	`2.09ms` from Denver, US
97.171.248.49	AS6167 Verizon Business	`19.93ms` from Denver, US
149.172.128.1	AS3209 Vodafone GmbH	`2.38ms` from Duesseldorf, DE
171.64.46.129	AS32 Stanford University	`1.71ms` from Fremont, US
110.88.36.1	AS4134 CHINANET-BACKBONE	`2.39ms` from Fuzhou, CN

Traceroute

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

traceroute -a -n -q1 210.125.222.4

traceroute to 210.125.222.4 (210.125.222.4): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.29 0.072 ms

2 [AS4766] 218.145.32.254 0.748 ms

3 *

4 *

5 [AS4766] 112.174.101.10 4.154 ms

6 [AS4766] 112.188.134.158 3.656 ms

7 *

8 [AS4766] 220.123.180.218 4.005 ms

9 [AS18029] 210.110.23.2 3.741 ms

10 [AS18029] 210.125.222.4 3.831 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On November 14th 2025

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