121.100.72.0/21

AS18334 · Gyounggidongbu cable tv co., Ltd.

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Summary

Country	South Korea
Domain	koren.kr
ASN	AS18334
Registry	KRNIC
ID	121.100.72.0-121.100.75.255

WHOIS Details

inetnum:            121.100.72.0 - 121.100.75.255
descr:              Gyounggidongbu cable tv co., Ltd.
network-type:       CUSTOMER
address:            Gyeonggi-do Namyangju-si Gyeongchun-ro 1298
zip-code:           12218
created:            2016-07-25
admin:              GENERATED-KRNIC-IP-MANAGER-NOC
country:            KR
source:             KRNIC

nic-hdl:            GENERATED-KRNIC-IP-MANAGER-NOC
person:             IP Manager
name:               IP Manager
phone:              +82-2-6191-2081
e-mail:             noc@koren.kr
source:             KRNIC

Nearby Ranges

BGP prefixes that overlap with 121.100.0.0/16

Range	ASN	Company	Num of IPs
121.100.32.0/20	AS38258	Asia Network for Sony companies, subsidiaries,	4,096
121.100.0.0/21	AS38158	PT. Cyberindo Aditama	2,048
121.100.48.0/21	AS38742	Afghan Wireless Communication Company	2,048
121.100.88.0/21	AS18334	Gyounggidongbu cable tv co., Ltd.	2,048
121.100.8.0/21	AS23776	NEC Corporation	2,048
121.100.120.0/22	AS10036	DLIVE Gyeongdogn Cable TV	1,024
121.100.68.0/22	AS10036	Gyounggidongbu cable tv co., Ltd.	1,024
121.100.124.0/22	AS18334	Gyounggidongbu cable tv co., Ltd.	1,024
121.100.16.0/22	AS9341	PT Indonesia Comnets Plus	1,024
121.100.22.0/23	AS9341	PT Indonesia Comnets Plus	512

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
121.100.72.255	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.11ms` from Seoul, KR
121.100.73.1	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.41ms` from Seoul, KR
121.100.78.112	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.42ms` from Seoul, KR
121.100.75.255	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.28ms` from Seoul, KR
121.100.74.6	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.54ms` from Seoul, KR
121.100.79.255	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.17ms` from Seoul, KR
121.100.77.1	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.17ms` from Seoul, KR
121.100.76.1	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.15ms` 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
39.107.200.213	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.42ms` from Beijing, CN
59.98.183.69	AS9829 National Internet Backbone	`7.02ms` from Chennai, IN
169.48.195.37	AS36351 IBM Cloud	`0.89ms` from Dallas, US
217.234.132.101	AS3320 Deutsche Telekom AG	`6.74ms` from Frankfurt am Main, DE
217.250.137.245	AS3320 Deutsche Telekom AG	`6.55ms` from Frankfurt am Main, DE
18.60.90.101	AS16509 Amazon.com, Inc.	`1.22ms` from Hyderabad, IN
189.124.253.133	AS28220 Alares Cabo Servicos de Telecomunicacoes S.A.	`3.08ms` from Joao Pessoa, BR
68.216.34.21	AS6389 AT&T Enterprises, LLC	`6.04ms` from Miami, US
23.42.143.101	AS16625 Akamai Technologies, Inc.	`0.14ms` from Osasco, BR
189.28.142.5	AS28291 MINISTERIO DA SAUDE	`1.14ms` from Rio de Janeiro, BR
185.107.187.5	AS204280 SIELTE S.P.A.	`1.76ms` from Rome, IT
101.64.47.37	AS4837 CHINA UNICOM China169 Backbone	`8.90ms` from Shanghai, CN
80.60.100.149	AS1136 KPN B.V.	`1.42ms` from Amsterdam, NL
44.246.61.213	AS16509 Amazon.com, Inc.	`0.22ms` from Boardman, US
41.178.15.85	AS24863 Link Egypt (Link.NET)	`10.25ms` from Cairo, EG
2.56.237.69	AS3257 GTT Communications Inc.	`0.21ms` from Dallas, US
83.169.158.229	AS3209 Vodafone GmbH	`1.83ms` from Hamburg, DE
170.185.173.21	AS11686 Zayo Bandwidth	`11.35ms` from Indianapolis, US
94.187.240.213	AS3225 GULFNET COMMUNICATIONS CO. WLL	`1.21ms` from Kuwait City, KW
216.226.216.101	AS12684 SES ASTRA S.A.	`0.68ms` from Lima, PE
194.79.31.5	AS9009 M247 Europe SRL	`0.38ms` from London, GB
150.224.245.5	AS33363 Charter Communications, Inc	`6.96ms` from Los Angeles, US
80.31.180.213	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.64ms` from Madrid, ES
73.94.31.101	AS7922 Comcast Cable Communications, LLC	`6.85ms` from Minneapolis, US
89.248.234.133	AS31430 OOO Suntel	`0.83ms` from Moscow, RU

Traceroute

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

traceroute -a -n -q1 121.100.72.1

traceroute to 121.100.72.1 (121.100.72.1): 64 hops max, 52 byte packets

1 [AS202422] 92.38.135.3 0.119 ms

2 *

3 *

4 *

5 [] 139.150.100.82 1.141 ms

6 *

7 *

8 *

9 *

10 [AS18334] 121.100.72.1 2.35 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On March 13th 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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