121.187.64.0/20

AS17862 · Kangwon National University

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Summary

Country	South Korea
Domain	kt.com
ASN	AS17862
Parent Range	121.160.0.0/11
Registry	KRNIC
ID	121.187.64.0-121.187.79.255

WHOIS Details

inetnum:            121.187.64.0 - 121.187.79.255
descr:              Gangwondaehakgyojeonjagyesanso
network-type:       CUSTOMER
address:            Hyoja2-Dong Chuncheon-Si Gangwon-Do
zip-code:           200092
created:            2021-11-17
admin:              GENERATED-KRNIC-IP-MANAGER-KORNETIP
country:            KR
source:             KRNIC

nic-hdl:            GENERATED-KRNIC-IP-MANAGER-KORNETIP
person:             IP Manager
name:               IP Manager
phone:              +82-2-500-6630
e-mail:             kornet_ip@kt.com
source:             KRNIC

Overlapping Ranges

BGP prefixes that contain 121.187.64.0/20

Range	ASN	Company	Num of IPs
121.160.0.0/11	AS23582	Korea Telecom	2,097,152
121.160.0.0/11	AS38089	Korea Telecom	2,097,152
121.160.0.0/11	AS4766	Korea Telecom	2,097,152

Nearby Ranges

BGP prefixes that overlap with 121.187.0.0/16

Range	ASN	Company	Num of IPs
121.160.0.0/11	AS23582	Korea Telecom	2,097,152
121.160.0.0/11	AS38089	Korea Telecom	2,097,152
121.160.0.0/11	AS4766	Korea Telecom	2,097,152
121.187.80.0/22	AS17862	Chuncheongyoyukdaehak	1,024
121.187.84.0/23	AS17862	Gangwondaehakgyojeonjagyesanso	512
121.187.23.0/24	AS55615	(ju)deojonbijeuon	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
121.187.64.236	AS17862 Kangwon National University	`7.21ms` 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
73.99.156.4	AS7922 Comcast Cable Communications, LLC	`10.38ms` from Ashburn, US
205.233.139.20	AS54181 ST JOSEPH HOSPITAL	`10.99ms` from Boston, US
135.18.160.4	AS8075 Microsoft Corporation	`0.23ms` from Boydton, US
47.188.136.36	AS5650 Frontier Communications of America, Inc.	`1.77ms` from Dallas, US
125.99.18.100	AS17488 Hathway IP Over Cable Internet	`1.53ms` from Delhi, IN
94.72.187.4	AS15943 wilhelm.tel GmbH	`0.46ms` from Hamburg, DE
80.24.18.20	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.71ms` from Madrid, ES
140.188.131.228	AS54600 PEG TECH INC	`0.70ms` from San Jose, US
14.78.202.228	AS4766 Korea Telecom	`8.76ms` from Seoul, KR
58.39.118.132	AS4812 China Telecom (Group)	`2.74ms` from Shanghai, CN
216.12.76.228	AS7795 LUMOS Networks, Inc.	`0.54ms` from Ashburn, US
111.198.69.4	AS4808 China Unicom Beijing Province Network	`4.32ms` from Beijing, CN
212.165.201.84	AS12684 SES ASTRA S.A.	`0.32ms` from Bucharest, RO
102.42.141.132	AS8452 TE-AS	`7.44ms` from Cairo, EG
212.28.78.4	AS15836 Arax-Impex s.r.l.	`0.73ms` from Chisinau, MD
97.75.76.164	AS11915 TPx Communications	`0.29ms` from Dallas, US
82.82.230.228	AS3209 Vodafone GmbH	`3.68ms` from Frankfurt am Main, DE
182.61.210.4	AS38365 Beijing Baidu Netcom Science and Technology Co., Ltd.	`5.14ms` from Guangzhou, CN
76.85.22.164	AS11427 Charter Communications Inc	`14.81ms` from Houston, US
20.192.224.196	AS8075 Microsoft Corporation	`13.12ms` from Mumbai, IN
79.44.43.116	AS3269 Telecom Italia S.p.A.	`15.50ms` from Naples, IT
116.222.151.68	AS9824 JCOM Co., Ltd.	`9.08ms` from Osaka, JP
34.7.197.244	AS396982 Google LLC	`0.14ms` from Oudeschip, NL
198.98.52.164	AS53667 FranTech Solutions	`0.22ms` from Piscataway, US
128.189.57.228	AS393249 University of British Columbia	`8.19ms` from Seattle, US

Traceroute

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

traceroute -a -n -q1 -m7 121.187.74.125

traceroute to 121.187.74.125 (121.187.74.125): 7 hops max, 52 byte packets

1 [AS197726] 91.231.84.1 4.263 ms

2 *

3 [AS6939] 216.66.80.125 8.204 ms

4 [AS6939] 184.104.195.108 28.326 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Kharkiv, UA

On January 9th 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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