121.100.72.0/21

AS18334 · Gyounggidongbu cable tv co., Ltd.

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Summary

Country	South Korea
Domain	dotnamekorea.com
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:              +82-31-266-5896
e-mail:             noc@dotnamekorea.com
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

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

IP Address	ASN	Details
121.100.78.132	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.46ms` from Seoul, KR
121.100.75.255	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.19ms` from Seoul, KR
121.100.73.1	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.26ms` from Seoul, KR
121.100.76.1	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.50ms` from Seoul, KR
121.100.77.1	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.30ms` from Seoul, KR
121.100.79.255	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.13ms` from Seoul, KR
121.100.74.9	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.70ms` from Seoul, KR
121.100.72.1	AS18334 Gyounggidongbu cable tv co., Ltd.	`2.24ms` 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
13.225.22.149	AS16509 Amazon.com, Inc.	`3.28ms` from Amsterdam, NL
148.70.155.21	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.87ms` from Chengdu, CN
72.46.3.213	AS20432 North East Fiber, LLC	`12.44ms` from Dallas, US
63.211.244.21	AS3356 Level 3 Parent, LLC	`0.33ms` from Denver, US
86.45.21.117	AS5466 Eircom Limited	`5.75ms` from Dublin, IE
177.125.23.69	AS52635 SPEEDCONNECT - TECNOLOGIA E EQUIPAMENTOS	`13.04ms` from Fortaleza, BR
9.223.22.85	AS8075 Microsoft Corporation	`0.15ms` from Gaevle, SE
80.153.198.213	AS3320 Deutsche Telekom AG	`4.75ms` from Hamburg, DE
221.143.151.149	AS9318 SK Broadband Co Ltd	`1.34ms` from Incheon, KR
209.199.21.5	AS8075 Microsoft Corporation	`0.38ms` from Jakarta, ID
105.224.29.21	AS37457 Telkom SA Ltd.	`3.32ms` from Johannesburg, ZA
89.243.69.53	AS13285 TalkTalk Communications Limited	`8.05ms` from London, GB
98.150.68.213	AS20001 Charter Communications Inc	`7.57ms` from Los Angeles, US
24.7.129.229	AS7922 Comcast Cable Communications, LLC	`10.66ms` from Los Angeles, US
64.58.47.245	AS1403 EBOX	`1.47ms` from Montreal, CA
16.54.81.53	AS16509 Amazon.com, Inc.	`0.20ms` from Montreal, CA
106.4.149.5	AS4134 CHINANET-BACKBONE	`5.39ms` from Nanchang, CN
184.152.218.165	AS12271 Charter Communications Inc	`3.64ms` from New York City, US
169.226.252.37	AS22990 University at Albany, State University of New York	`4.16ms` from New York City, US
64.80.1.229	AS7029 Windstream Communications LLC	`5.15ms` from New York City, US
73.88.83.5	AS7922 Comcast Cable Communications, LLC	`12.82ms` from Orlando, US
45.180.210.229	AS269155 BS News Informática SCM Ltda ME	`5.01ms` from Osasco, BR
166.62.55.21	AS26496 GoDaddy.com, LLC	`1.00ms` from Phoenix, US
189.28.142.5	AS28291 MINISTERIO DA SAUDE	`1.26ms` from Rio de Janeiro, BR
104.58.131.101	AS7018 AT&T Enterprises, LLC	`9.69ms` from San Antonio, US

Traceroute

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

traceroute -a -n -q1 121.100.72.255

traceroute to 121.100.72.255 (121.100.72.255): 64 hops max, 52 byte packets

1 [AS202422] 92.38.135.2 2.881 ms

2 *

3 *

4 *

5 [] 139.150.100.82 1.494 ms

6 *

7 *

8 *

9 *

10 [AS18334] 121.100.72.255 2.275 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 19th 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.

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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